Surgical absorbent cotton: material production.
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INTERSTATE STANDARD
TECHNICAL CONDITIONS
Official edition
IPK PUBLISHING STANDARDS Moscow
3.20.3. The mass of packs is calculated as the arithmetic mean of the results of weighing 10 packs simultaneously, calculated with an error of up to 0.1 g and rounded up to 1 g.
4. MARKING, PACKAGING, TRANSPORT AND STORAGE 4.1. Marking
4.1.1. Each pack of sterile or non-sterile cotton wool must be marked with colored indelible paint indicating:
emblems of the Red Cross;
the name of the manufacturer and its trademark; type of cotton; weight of cotton wool, g;
sterile or non-sterile; opening method (for sterile cotton wool); year of manufacture; designations of this standard.
4.1.2. A label is inserted inside a box, bag or cylindrical bale indicating: the name of the manufacturer and its trademark;
type of cotton; the number of packs;
series numbers (for sterile cotton wool); OTK stamp or controller number; year of manufacture.
4.1.3. Transport marking - in accordance with GOST 14192 with the application of the handling sign "Keep away from moisture" and the danger sign according to class 9.2 in accordance with GOST 19433, indicating the following additional designations:
on a box, a bag and a cylindrical bale:
name of the manufacturer and its trademark, type of cotton wool,
sterile or non-sterile,
series numbers (for sterile cotton),
lot numbers (for non-sterile cotton),
pack net weight, g,
net and gross weights, kg,
year of manufacture;
on a pile of pressed cotton wool:
the name of the manufacturer and its trademark,
type of cotton,
lot numbers,
net and gross weights, kg,
year of manufacture
designations of this standard.
(Revised edition, Rev. No. 1).
4.1.4. When applying the inscription "sterile" or "non-sterile" it should be highlighted in large print or in a different color.
4.2. Package
4.2.1. Cotton wool should be packed:
sterile and non-sterile - in rolls weighing (25 + 2), (50 + 4), (100 + 5) and (250 + 10) g; non-sterile - in compressed bales weighing (20 + 0.2), (30 + 0.3), (40 + 0.4) and (50 + 0.5) kg. It is allowed, upon agreement with the consumer, to lay cotton wool in the form of a zigzag ribbon of dense and loose pressing in packs weighing (50 + 4), (100 + 5) and (250 + 10) g.
4.2.2. Rolls of sterile cotton wool should be packed in packs in two layers of paper: inner and outer.
For the inner layer, paper grades A and B are used, weighing 1 m 2 30-40 g according to GOST 8273, brand ODPB-28 according to GOST 16711 or glassine according to TU 13-0248643-825.
For the outer layer, parchment grades A and B are used according to GOST 1341.
4.2.3. Rolls of non-sterile cotton wool and packs laid in the form of a zigzag tape must be packed in a single layer of paper or polyethylene film.
Used for packaging:
glassine according to normative and technical documentation; subparchment according to GOST 1760;
wrapping paper grades A and B weighing 1 m 2 30-40 g according to GOST 8273 and special packaging paper according to regulatory and technical documentation;
polyethylene film with a thickness of 0.06-0.07 mm according to GOST 10354.
4.2.4. Rolls of sterile cotton wool are packed in paper in the following way: rolls of cotton wool are wrapped in the inner layer of paper in 1.5 turns, the ends are sealed with an envelope without gluing. The roll is wrapped annularly with a thread of trade number 10 or 20 according to GOST 6309, then, together with the outer layer, it is tightly wrapped in 1.5 turns so that the end of the free thread remains 3-4 cm. By agreement with consumers, it is allowed to produce rolls of sterile cotton without wrapping thread .
The roll, packed in paper, is sealed, and the end sides are sealed with an envelope, after which they are bandaged.
4.2.3; 4.2.4. (Revised edition, Rev. No. 1).
4.2.5. A roll of non-sterile cotton wool is packed in paper in the following way: a roll of cotton wool is placed on the corner of the paper, after the first turn, the corners of the paper at the ends of the roll are folded inward, and the free corner is sealed.
It is allowed to wrap a roll of cotton wool in 1.5 turns, when laying a zigzag tape - in 1.2 turns with sealing the ends of the paper with an envelope and gluing.
4.2.6. For gluing paper, apply: potato starch according to GOST 7699; corn starch according to GOST 7697 1;
water-soluble methylcellulose grade MTs-100 according to normative and technical documentation;
(Revised edition, Rev. No. 1).
4.2.7. When packing packaged non-sterile cotton wool in a polyethylene film, the ends of the package are sealed.
4.2.8. Packs of sterile and non-sterile cotton wool must correspond to the sizes indicated in Table. 2 and 3.
4.2.9. Packs of sterile and non-sterile cotton wool must be packed in plywood boxes according to GOST 10350 or corrugated cardboard boxes according to GOST 13514, paper three- or four-layer bags of HM and BM brands according to GOST 2226.
It is allowed, in agreement with the consumer, to pack packs of sterile and non-sterile cotton wool in bags made of polyethylene film 0.1 mm thick in accordance with GOST 10354.
A specific type of transport container for packing sterile cotton wool is established by agreement between the manufacturer and the consumer.
GOST 5556-81 S. 11
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Table 3 |
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4.2.9.1. When packing cotton wool in plywood boxes, packs are stacked in rows with lining the inside of the box with one layer of paper according to GOST 1341, GOST 1760, GOST 8273 and GOST 2228 and special packaging paper according to regulatory and technical documentation.
4.2.8-4.2.9.1. (Revised edition, Rev. No. 1).
4.2.9.2. When packing cotton wool in paper bags, the open end of the bag is sewn up.
4.2.9.3. When packing packs of cotton wool in cylindrical bales, they are placed in the following way: packs are placed in a vertical position in a ring and tied with a cord in accordance with GOST 29231 or twine in accordance with GOST 17308 and other regulatory and technical documentation. Then the resulting ring-shaped row of packs is superimposed one on top of the other and wrapped on all sides with paper according to GOST 1341, GOST 1760, GOST 2228, GOST 8273 and sheathed with one layer of non-woven container fabric according to regulatory and technical documentation, investment fabric according to GOST 5530 or other types of packaging materials except fabrics made from natural fibres.
(Revised edition, Rev. No. 1).
4.2.9A Packs of cotton wool are placed in cylindrical bales:
weighing 50 g in the amount of 600 pieces;
» 100 g each » 300 pieces;
» 250 g each » 120 or 160 pcs.
4.2.10. Packs of the same type are placed in each box, bag or cylindrical bale,
one mass, sterile or non-sterile.
4.2.11. Bales of pressed cotton wool are wrapped with one layer of paper according to GOST 1341, GOST 1760, GOST 2228, GOST 8273 and special packaging paper according to regulatory and technical documentation and sheathed with one layer of non-woven container fabric according to regulatory and technical documentation, packing fabric according to GOST 5530 or other types of packaging materials, excluding fabrics made from natural fibers. Then the bales are tied with a rope according to GOST 1868 with a diameter of at least 8 mm or a cord according to GOST 29231, or a braid made of chemical fibers according to regulatory and technical documentation.
(Revised edition, Rev. No. 1).
4.2.12. In the regions of the Far North and areas equated to them, cotton wool is packed according to GOST 15846.
4.3. Transportation
4.3.1. Cotton wool is transported by all modes of transport in covered vehicles in accordance with the transportation rules established for each type of transport.
4.4. Storage
4.4.1. Packed cotton wool should be stored in warehouses on pallets or racks in accordance with fire safety rules in conditions that prevent exposure to atmospheric precipitation and soil moisture.
It is allowed to store cotton wool under canopies with tarpaulin cover.
APPLICATION
Mandatory
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Compositions of mixtures for cotton wool production, % |
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Note. It is allowed to invest no more than 10% of cotton fiber of the 4th grade in surgical cotton instead of cotton fiber of the 3rd grade.
It is allowed to insert imported viscose fiber into surgical cotton wool instead of viscose fiber according to GOST 10546 of similar linear density and cutting length without compromising the quality of cotton wool according to the indicators normalized in this standard.
APPLICATION. (Revised edition, Rev. No. 1).
INFORMATION DATA
1. DEVELOPED AND INTRODUCED by the USSR Ministry of Light Industry
2. APPROVED AND INTRODUCED BY Decree of the USSR State Committee for Standards dated 08.12.81 No. 3813
4. REFERENCE REGULATIONS AND TECHNICAL DOCUMENTS
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Number of paragraph, subparagraph, application |
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4.2.2, 4.2.9.1, 4.2.9.3, 4.2.11 | |||||||||
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4.2.3, 4.2.9.1, 4.2.9.3, 4.2.11 | |||||||||
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4.2.9.1, 4.2.9.3, 4.2.11 | |||||||||
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Application | |||||||||
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Application | |||||||||
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3.3.2, 3.4.2, 3.8.2, 3.11.2, |
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3.4.2, 3.6.2, 3.7.2, 3.11.2, |
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3.12.2, 3.13.2, 3.14.2 |
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3.11.2, 3.12.2, 3.13.2 |
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3.10.2, 3.11.2, 3.12.2 |
TU 13-0248643-825-91 | ||||||||
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4.2.2, 4.2.3, 4.2.9.1, 4.2.9.3, | |||||||||
5. The limitation of the validity period was removed by the Decree of the State Standard of the USSR dated 12/18/91 No. 1976
6. EDITION (November 2003) with Amendment No. 1 approved in January 1987 (IUS 5-87)
Editor T.P. Shashina Technical editor V.N. Prusakova Proofreader R.A. Mentova Computer layout S.V. Ryabovoy
Ed. persons. No. 02354 dated 07/14/2000. Handed over to the set 11/05/2003. Signed for publication on 09.12.2003. Conditions.print.l. 1.86. Uch.-ed.l. 1.60.
Circulation 85 copies. From 12946. Order. 358.
IPK Standards Publishing House, 107076 Moscow, Kolodezny per., 14. http://www.standards.ru e-mail: [email protected]
Typed and printed at IPK Standards Publishing House
INTERSTATE STANDARD
HYGROSCOPIC MEDICAL WOOL
Specifications
Hygroscopic medical cotton wool. Specifications
MKS 11.120.20 OKP 81 9510
Date of introduction 01.07.82
This standard applies to medical absorbent cotton intended for medical purposes.
1. TECHNICAL REQUIREMENTS
1.1. Medical absorbent cotton wool must be manufactured in accordance with the requirements of this standard according to the technological regulations approved in the prescribed manner.
1.2. Medical hygroscopic cotton wool, depending on the purpose, is divided into types:
surgical;
hygienic.
1.3. Medical hygroscopic eye and hygienic cotton should be made from cotton fiber.
Medical absorbent surgical cotton should be made from cotton fiber or a mixture of cotton fiber and viscose staple fiber.
The compositions of the mixtures are indicated in the appendix.
1.4. According to physical, mechanical and chemical indicators, medical hygroscopic cotton wool must meet the requirements specified in Table. 1.
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Table 1 |
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Official publication Reprint prohibited |
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© Standards Publishing, 1981 © IPK Standards Publishing, 2003
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Continuation of the table. 1 |
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(Revised edition, Rev. No. 1).
1.5. The wadding should be well combed, retaining the bond between the fibers and easily delaminate into parallel layers of arbitrary thickness.
1.6. Cotton wool is produced sterile and non-sterile.
1.7. The shelf life of cotton wool is at least 5 years.
2. ACCEPTANCE RULES
2.1. Vatu is taken in batches. A batch is considered to be products of the same type, one packaging, issued with one document certifying its quality.
2.2. 100% of products are subjected to quality control of cotton wool in terms of appearance, compliance of packaging and labeling with the requirements of regulatory and technical documentation.
2.3. To control the quality of cotton wool according to physical, mechanical and chemical indicators, the following are selected from the batch:
when packing in bales - 10%, but not less than three bales;
when packing cotton wool in cylindrical bales, boxes or bags - 5%, but not less than one packaging unit.
2.4. To control the mass of cotton wool in bales, five bales are taken from the batch.
2.5. To control the mass of cotton wool in packs, 10 packs are taken from a cylindrical bale, box or bag.
2.6. Upon receipt of unsatisfactory test results for at least one indicator, a double check of the double number of samples taken from the same bales, bags or boxes is carried out on it.
The retest results apply to the entire lot.
3. TEST METHODS 3.1. Sampling method
3.1.1. From each selected bale, the top layer of cotton wool 5-8 cm thick is removed, then
at a depth of 10 cm from the edge of the bale, at least three point samples are taken from different places. The mass of the incremental sample must be at least 100 g.
3.1.2. For sampling from packaged packs, from each selected cylindrical bale, box or label, at least 10 packs are taken from different places when packing 250 g, at least 20 packs when packing 50 and 100 g, and at least 40 packs when packing 25 g .
From the selected packs of cotton wool, a point sample weighing at least 100 g is made.
3.1.3. Each incremental sample is wrapped in paper and the type of cotton wool and batch number are indicated. Then all point samples are wrapped in a common package and the address of the manufacturer, the type of cotton wool, the batch number and the date of sampling are put down.
From the selected point samples, a combined sample weighing at least 1 kg is made.
3.1.4. To determine the moisture content of cotton wool, a sample weighing at least 200 g is taken from the combined sample. The selected sample is placed in a jar with a tightly closed lid or tightly packed in a plastic bag, a label is inserted indicating the type of cotton wool and the batch number from which the sample was taken.
3.1.5. Before testing, the samples must be kept in climatic conditions according to GOST 10681 for at least 4 hours. The test is carried out under the same conditions.
3.2. Determination of the content of dense uncombed accumulations of fiber knots
3.2.1. Two portions weighing 1 g each, weighed with an error of not more than 0.01 g, are taken from the combined sample.
3.2.2. Conducting a test
Each sample is placed on a board covered with black velvet, or on black glass, and with the help of tweezers, the number of knots in the cotton wool is counted, while the knots are not pulled apart, but moved on the surface of the board.
(Revised edition, Rev. No. 1).
3.2.3. Results processing
The calculated average number of nodules in two samples is referred to 0.1 g, i.e., divided by 10. Then, according to the nomogram, the calculated average content of nodules in 0.1 g is converted into their corresponding weight in cotton wool, expressed as a percentage.
3.3. Determination of the content of short fibers (less than 5 mm) and cotton dust
3.3.1. From the combined sample, three weighings of 5 g each are taken, weighed with an error of not more than 0.01 g.
3.3.2. Equipment
GOST 24104 2 .
GOST 24104 2 .
3.3.3. Conducting a test
Each sample is divided into separate layers and pulled apart by hands, pinching between the thumb and forefinger over black glass five times in a row.
Short fibers less than 5 mm long isolated on black glass and cotton dust are collected, transferred to a glass and weighed with an error of not more than 0.001 g.
3.3.4. Results processing
For the final test result, the arithmetic mean of the test results of three determinations, calculated with an error of up to 0.001% and rounded up to 0.01%, is taken.
3.4. Definition of weediness
3.4.1. Two portions weighing 5 g each, weighed with an error of not more than 0.01 g, are taken from the combined sample.
3.4.2. Equipment
Equal-arm laboratory scales of the 2nd class according to GOST 24104 2 .
Equal arm laboratory scales of the 4th class according to GOST 24104 2 .
Cup for weighing according to GOST 25336.
(Revised edition, Rev. No. 1).
3.4.3. Conducting a test
Each sample is placed on a sheet of paper or cardboard and litter, skin with fiber, particles of boxes, leaf, stem are selected with tweezers.
Selected weed impurities are weighed with an error of not more than 0.001 g.
3.4.4. Results processing
The clogging of cotton wool (3) as a percentage is calculated by the formula
3 = - ■ 100, i.e.
where m is the mass of weed impurities, g; w, - mass of sample, g.
The final test result is taken as the arithmetic mean of the test results of two parallel determinations, calculated with an error of up to 0.001% and rounded up to 0.01%.
3.5. Determination of ash content Ash content is determined according to GOST 3818.1.
3.6. Determination of the content of fatty and waxy substances
3.6.1. Three weights of air-dry cotton wool weighing 5-10 g each are taken from the combined sample, the third weight is control.
3.6.2. Equipment, reagents and materials
Nozzle for extraction (Soxhlet) according to GOST 25336.
Bath water.
Cup for weighing according to GOST 25336.
3.6.3. Conducting a test
Each sample of cotton wool is wrapped in fat-free filter paper, placed in
extraction nozzle so that the top edge of the sample is no higher than the top end of the siphon. Then the nozzle is connected to a calibrated flask and ethyl ether is poured in 1.5-1.7 volumes more than is necessary for pouring the ether through a siphon. A weighed sample with a calibrated flask is connected to a refrigerator and extracted on a water bath for six transfusions of ether.
At the end of the extraction, the sample of cotton wool is removed, and the ether is distilled off from the flasks. A portion of cotton wool and a flask with the remaining fatty substances are kept in a fume hood until the smell of ether disappears.
A piece of cotton wool is placed in a calibrated bottle. The flask and bottle with an open lid are dried in an oven at 100–110°C to constant weight.
The first weighing is carried out after 3 hours, the next after 30 minutes. Before weighing, the flasks and weighing bottles, having closed the latter with lids, are placed for cooling in a desiccator for 10-15 minutes, then weighed on a laboratory balance.
3.6.4. Results processing
where m 2 is the mass of fatty and waxy substances after drying, g; t 3 is the mass of the dried sample after extraction, g.
The test result is taken as the arithmetic mean of the test results of the two determinations. If the difference between the test results exceeds 0.05 %, a third determination is made.
The final test result is the arithmetic mean of the results of three determinations, calculated with an error of up to 0.001% and rounded up to 0.01%.
3.6.2-3.6.4. (Revised edition, Rev. No. 1). 3.7. Determination of humidity
3.7.1. Sampling - by and. 3.1.4 with the following addition:
Take from the sample:
for textile dryers of all brands - one sample weighing at least 200 g;
for drying cabinets - three samples weighing 5 g each.
3.7.2. Equipment
Textile drying apparatus AST-73 and other brands with a heating temperature of 100-110 °C.
Drying cabinet with heating temperature 100-110 °С.
Cup for weighing according to GOST 25336.
(Revised edition, Rev. No. 1).
3.7.3. Conducting a test
3.7.3.1. Determination of humidity in a drying cabinet and drying textile apparatus - according to GOST 3274.4.
3.7.3.2. In case of disagreement between the consumer and the manufacturer, the humidity is determined by drying in an oven.
3.8. Determination of absorbency
3.8.1. From the combined sample, four weighings of 1 g each are taken, weighed with an error of up to 0.01 g.
3.8.2. Equipment
Equal-arm laboratory scales of the 4th class according to GOST 24104.
Drying cabinet with heating temperature 100-110 °С.
Buchner porcelain funnels No. 2 according to GOST 9147.
Glasses with a capacity of 300 cm 3.
3.8.3. Conducting a test
Before testing to determine the actual moisture content, the first sample is dried to a constant dry mass. Simultaneously, the second air-dry sample is evenly laid out on the surface of the bottom of the funnel, fixed in a stand. The lower end of the funnel is closed with a stopper. Then, from a height of not more than 5 cm above the edge of the funnel, the sample is poured evenly over the entire surface to the brim with distilled water. After 10 minutes, the cork is removed, after which, after 2-3 minutes
the sample of cotton wool is carefully turned over with tweezers to the other side to allow non-fiber-bound water to drain into the glass for 10 minutes. Then, a portion of cotton wool is transferred to a pre-weighed dry cup, the mass of which should not exceed 50 g. Two other portions are tested in the same way.
3.8.4. Results processing
The absorption capacity of cotton wool (K) in grams is calculated by the formula
t 4 (100 - F f) ’
where n is the amount of water absorbed by an air-dry sample of cotton wool, g; t 4 - mass of air-dry sample, g;
Wf - actual moisture content of cotton wool, %.
The final test result is taken as the arithmetic mean of the test results of three determinations, calculated with an error of up to 0.1 g and rounded to the nearest 1 g.
3.9. Determination of capillarity
3.9.1. From the combined sample, ten weighings of 0.5 g each are taken for tubes with a diameter of 7 mm. When using tubes of other diameters to maintain the set density in the tube, the weight of the sample of cotton wool (t 5) is calculated by the formula
where d is the diameter of the tube used, mm;
0.01 - weight conversion factor.
3.9.2. Equipment and reagents
Glass tubes, 140 mm long, with an internal diameter of 6-8 mm, marked with divisions from 0 to 100 mm every millimeter at a distance of 15 mm from the lower end.
Glass stick.
Tripod with round holes.
Glass stick.
3.10.3. Conducting a test
The selected sample is placed in a porcelain cup, poured with distilled water (200-250 cm 3) and boiled for 15 minutes. Then the sample is squeezed out, the liquid is filtered, evaporated
GOST 6709.
Extract water 10 cm 3.
Volumetric flasks with a capacity of 1000 cm 3.
Drying cabinet with heating temperature 100-110 °С.
Extract water 10 cm 3.
Cotton wool medical 100% cotton
Medical cotton wool(from it. Watte) - a fluffy mass of fibers, loosely intertwined in various directions, is intended for use in hospital, outpatient and home conditions.
There are hygroscopic hygienic medical, surgical and eye cotton.
Surgical cotton- white, easily stratified, used as a material that absorbs liquid secretions (pus), when dressing wounds over bandage layers. It does not cause any irritating effect upon contact with skin and mucous membranes. It has a uniform structure, without foreign inclusions, a soft neck. Easily spreads into parallel layers. Cotton wool has a high sorption capacity, effectively absorbs and retains wound discharge, is well wetted both by wound exudate and drug solutions.
cotton wool medical can serve to warm a tied or bandaged part of the body (for example, with warming compresses), as well as a soft lining when applying splints and immobilizing dressings (for example, plaster).
In the production of medical cotton wool - the raw material is subjected to pressure pulping in alkali and then processed with sodium hyposulfite. As a result, the fiber acquires whiteness and characteristic properties - the ability to quickly wet and absorb liquids.
Cotton wool medical hygroscopic surgical sterile meets medical requirements and is recommended for wide use in medical practice as dressings: cotton-gauze dressings, cotton balls, turundas.
Cotton wool medical surgical hygroscopic non-sterile
Packing: paper and polypropylene 25 g, 50 g, 100 g, 250 g, bale - 30 kg.
Composition: 100% cotton
Cotton wool medical surgical hygroscopic sterile
Packing: polypropylene 25 g, 50 g, 100 g, 250 g,
Composition: 100% cotton
Cotton wool medical hygroscopic "Ocular" non-sterile
Packing: paper and polypropylene 25 g, 50 g, 100 g, 250 g,
Composition: 100% cotton
Approved Decree of the USSR State Committee for Standards of August 12, 1981 N 3813
State standard of the USSR GOST 5556-81
"Hygroscopic medical cotton wool. SPECIFICATIONS"
Hygroscopic medical cotton wool. Specifications
Instead of GOST 5556-75, GOST 12233-77
This standard applies to medical absorbent cotton intended for medical purposes.
1. Technical requirements
1.1. Medical absorbent cotton wool must be manufactured in accordance with the requirements of this standard according to the technological regulations approved in the prescribed manner.
1.2. Medical hygroscopic cotton wool, depending on the purpose, is divided into types:
surgical;
hygienic.
1.3. Medical hygroscopic eye and hygienic cotton should be made from cotton fiber.
Medical absorbent surgical cotton should be made from cotton fiber or a mixture of cotton fiber and viscose staple fiber.
The compositions of mixtures are indicated in the mandatory appendix.
1.4. According to physical, mechanical and chemical indicators, medical hygroscopic cotton wool must meet the requirements specified in Table. 1.
Table 1
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Name of indicator |
Norm for cotton wool |
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surgical |
hygienic |
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cotton |
cotton-viscose |
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1. Mass fraction of dense uncombed accumulations of fibers - nodules,%, no more | ||||
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2. Mass fraction of short fibers (less than 5 mm) and cotton, dust,%, no more | ||||
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3. Infestation, %, no more | ||||
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Not allowed |
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5. Ash content,%, no more | ||||
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6. Mass fraction of fatty and waxy substances,%, no more | ||||
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7. Humidity, %, no more | ||||
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8. Absorption capacity, g, not less | ||||
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9. Capillarity, mm, not less | ||||
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10. Water extract reaction |
Neutral |
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11. Mass fraction of chloride salts, %, no more | ||||
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12. Mass fraction of sulfate salts,%, no more | ||||
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13. Mass fraction of calcium salts, %, no more | ||||
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15. Degree of whiteness, %, not less than: | ||||
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for non-sterile cotton | ||||
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for sterile cotton | ||||
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16. (Deleted, Rev. N 1). | ||||
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Not allowed |
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1.5. The wadding should be well combed, retaining the bond between the fibers and easily delaminate into parallel layers of arbitrary thickness.
1.6. Cotton wool is produced sterile and non-sterile.
1.7. The shelf life of cotton wool is at least 5 years.
2. Acceptance rules
2.1. Vatu is taken in batches. A batch is considered to be products of the same type, one packaging, issued with one document certifying its quality.
2.2. 100% of products are subjected to quality control of cotton wool in terms of appearance, compliance of packaging and labeling with the requirements of regulatory and technical documentation.
2.3. To control the quality of cotton wool according to physical, mechanical and chemical indicators, the following are selected from the batch:
when packing in bales - 10%, but not less than three bales;
when packing, cotton wool in cylindrical bales, boxes or bags - 5%, but not less than one packaging unit.
2.4. To control the mass of cotton wool in bales, 5 bales are taken from the batch.
2.5. To control the mass of cotton wool in packs, 10 packs are taken from a cylindrical bale, box or bag.
2.6. Upon receipt of unsatisfactory test results for at least one indicator, a double check of the double number of samples taken from the same bales, bags or boxes is carried out on it.
The retest results apply to the entire lot.
3. Test methods
3.1. Sampling method
3.1.1. From each selected bale, the top layer of cotton wool 5-8 cm thick is removed, then at a depth of 10 cm from the edge of the bale, at least three point samples are taken from different places. The mass of the incremental sample must be at least 100 g.
3.1.2. For sampling from packaged packs, from each selected cylindrical bale, box or bag, at least 10 packs are taken from different places when packing 250 g, at least 20 packs - when packing 50 and 100 g, and at least 40 packs when packing 25 G.
From the selected packs of cotton wool, a point sample weighing at least 100 g is made.
3.1.3. Each incremental sample is wrapped in paper and the type of cotton wool and batch number are indicated. Then all spot Samples are wrapped in a common bundle and the address of the manufacturer, type of cotton wool, lot number and date of sampling are put down.
From the selected point samples, a combined sample weighing at least 1 kg is made.
3.1.4. To determine the moisture content of cotton wool, a sample weighing at least 200 g is taken from the combined sample. The selected sample is placed in a jar with a tightly closed lid or tightly packed in a plastic bag, a label is inserted indicating the type of cotton wool and the batch number from which the sample was taken.
3.1.5. Before testing, the samples must be kept in climatic conditions in accordance with GOST 10681-75 for at least 4 hours. The test is carried out under the same conditions.
3.2. Determination of the content of dense uncombed accumulations of fiber knots
3.2.1. Two portions weighing 1 g each are taken from the combined sample, weighed with an error of not more than 0.01 g.
3.2.2. Conducting a test
Each sample is placed on a board covered with black velvet, or on black glass, and with the help of tweezers, the number of knots in the cotton wool is counted, while the knots are not pulled apart, but moved on the surface of the board.
(Changed edition, Rev. N 1).
3.2.3. Results processing
The calculated arithmetic mean number of nodules for two samples is referred to 0.1 g, i.e. divided by 10. Then, according to the nomogram, the calculated, average content of nodules in. 0.1 g in their respective mass in cotton, expressed as a percentage.
3.3. Determination of the content of short fibers (less than 5 mm) - and cotton dust
3.3.1. Three portions weighing 5 g each, weighed with an error of not more than 0.01 g, are taken from the combined sample.
3.3.2. Equipment
Black glass, according to GOST 21400-75.
3.3.3. Conducting a test
Each sample is divided into separate layers and pulled apart by hands, pinching between the thumb and forefinger over black glass five times in a row.
Short fibers less than 5 mm long isolated on black glass and cotton dust are collected, transferred to a glass and weighed with an error of not more than 0.001 g.
3.3.4. Results processing
The final test result is taken as the arithmetic mean of the test results of three determinations, calculated with an error up to 0.001% and rounded up to 0.01%.
3.4. Definition of weediness
3.4.1. From the combined sample, two weighings of 5 g each are taken, weighed with an error of not more than 0.01 g.
3.4.2. Equipment
Nomogram for determining the content of dense uncombed. accumulations of fiber-nodules in medical absorbent cotton.
Equal-arm laboratory scales of the 2nd class according to GOST 24104-88.
Equal-arm laboratory scales of the 4th class according to GOST 24104-88.
(Changed edition, Rev. N 1).
3.4.3. Conducting a test
Each sample is placed on a sheet of paper or cardboard and litter, skin with fiber, particles of boxes, leaf, stem are selected with tweezers.
Selected weeds are weighed with an error of not more than 0.001 g.
3.4.4. Results processing
The clogging of cotton wool (Z) as a percentage is calculated by the formula
where m is the mass of weed impurities, g;
m 1 - sample weight, g.
The final test result is taken as the arithmetic mean of the test results of two parallel determinations, calculated with an error of up to 0.001)% and rounded to 0.01%.
3.5. Determination of ash content
Ash content is determined according to GOST 3818.1-72.
3.6. Determination of the content of fatty and waxy substances
3.6.1. Three weights of air-dry cotton wool weighing 5-10 g each are taken from the combined sample, the third weight is control.
3.6.2. Equipment, reagents and materials
Nozzle for extraction (Soxhlet) according to GOST 25336-82.
Refrigerator according to GOST 25336-82.
Flask calibrated according to GOST 25336-82.
Bath water.
Cup for weighing according to GOST 25336-82.
Desiccator according to GOST 25336-82.
Ethyl ether according to GOST 22300-76.
3.6.3. Conducting a test
Each sample of cotton wool is wrapped in fat-free filter paper, placed in the extraction nozzle so that the upper edge of the sample is not higher than the upper end of the siphon. Then the nozzle is connected to a calibrated flask and ethyl ether is poured in 1.5-1.7 volumes more than is necessary for pouring the ether through a siphon. A weighed sample with a calibrated flask is connected to a refrigerator and extracted on a water bath for six transfusions of ether.
At the end of the extraction, the sample of cotton wool is removed, and the ether is distilled off from the flasks. A portion of cotton wool and a flask with the remaining fatty substances are kept in a fume hood until the smell of ether disappears.
A piece of cotton wool is placed in a calibrated bottle. The flask and bottle with an open lid are dried in an oven at 100-110°C to constant weight.
The first weighing is carried out after 3 hours, the next after 30 minutes. Before weighing, the flasks and weighing bottles, having closed the lids of the latter, are placed for cooling in a desiccator for 10-15 minutes, then weighed on a laboratory balance.
3.6.4. Results processing
,
where m 2 is the mass of fatty and waxy substances after drying, g;
m 3 - mass of the dried sample after extraction, g.
The test result is taken as the arithmetic mean of the test results of the two determinations. If the discrepancy between the test results exceeds 0.05%, a third determination is made.
The final test result is taken as the arithmetic mean of the results of three determinations, calculated with an error up to 0.001% and rounded up to 0.01%.
3.6.3; 3.6.4. (Changed edition, Rev. N 1).
3.7. Determination of humidity
3.7.1. Sampling - according to clause 3.1.4 with the following addition:
Take from the sample:
for textile dryers of all brands - one sample weighing at least 200 g;
for drying cabinets - three samples weighing 5 g each.
3.7.2. Equipment
Apparatus for drying textile AST-73 and other brands with a heating temperature of 100-110°C.
Drying cabinet with heating temperature 100-110°С.
Cup for weighing according to GOST 25336-82.
Desiccator according to GOST 25336-82.
3.7.3. Conducting a test
3.7.3.1. Determination of humidity in a drying cabinet and drying textile apparatus - according to GOST 3274.4-72.
3.7.3.2. In case of disagreement between the consumer and the manufacturer, the humidity is determined by drying in an oven.
3.8. Determination of absorbency
3.8.1. Four portions weighing 1 g each are taken from the combined sample, weighed with an error of up to 0.01 g.
3.8.2. Equipment
Equal-arm laboratory scales of the 4th class according to GOST 24104-88.
Drying cabinet with heating temperature 100-110°С.
Funnels porcelain Buchner N 2 in accordance with GOST 9147-80.
Porcelain cup according to GOST 9147-80.
Glasses with a capacity of 300 cm 3.
3.8.3. Conducting a test
Before testing to determine the actual moisture content, the first sample is dried to a constant dry mass. Simultaneously, the second air-dry sample is evenly laid out on the surface of the bottom of the funnel, fixed in a stand. The lower end of the funnel is closed with a stopper. Then, from a height of not more than 5 cm above the edge of the funnel, the sample is poured evenly over the entire surface to the brim with distilled water. After 10 minutes, the cork is removed, after which, after 2-3 minutes, the cotton wool sample is carefully turned over with tweezers to the other side to allow water that is not associated with the fiber to drain into the glass for 10 minutes. Then, a portion of cotton wool is transferred to a pre-weighed dry cup, the mass of which should not exceed 50 g. Two other portions are tested in the same way.
3.8.4. Results processing
The absorption capacity of cotton wool (K) in grams is calculated by the formula
,
where n is the amount of water absorbed by an air-dry sample of cotton wool, g;
m 4 - mass of air-dry sample, g;
W f - the actual moisture content of cotton wool,%.
The final test result is taken as the arithmetic mean of the test results of three determinations, calculated with an error of up to 0.1 g and rounded to the nearest 1 g.
3.9. Determination of capillarity
3.9.1. From the combined sample, ten weighings of 0.5 g each are taken for tubes with a diameter of 7 mm. When using tubes of other diameters to maintain the set density in the tube, the weight of the sample of cotton wool (K) is calculated by the formula
where d is the diameter of the tube used, mm;
0, 01 - weight conversion factor.
3.9.2. Equipment and reagents
Glass tubes, 140 mm long, with an inner diameter of 6-8 mm, marked with divisions from 0 to 100 mm every millimeter at a distance of 15 mm from the lower end.
Ruler millimeter according to GOST 17435-72.
Glass stick.
Tripod with round holes.
Potassium bichromic acid according to GOST 4220-75, concentration 5 g per 1 liter.
3.9.3. Conducting a test
The selected samples are pulled into ribbons and the tubes are evenly stuffed from zero division to 85.
Tubes with weights of cotton wool are fixed in a tripod.
A solution of potassium dichromate is poured into the bath at a temperature of 16 to 24 ° C and the lower ends of the tubes are brought up so that the surface of the solution is at zero division, touching the sample. This moment is taken as the beginning of the test.
The height of the rise of the solution in the tubes is measured with a ruler after 10 minutes. The highest wetting point is taken as the height of the solution in each of the ten tubes, regardless of the uniformity of wetting of the sample in the tube.
3.9.4. In case of disagreement between the consumer and the manufacturer, the capillarity of cotton wool is determined on tubes with a diameter of 7 mm with a weight of cotton wool of 0.5 g.
3.9.5. Results processing
The final test result is taken as the arithmetic mean of the test results of ten determinations, calculated with an error of up to 0.5 mm and rounded to the nearest 1 mm.
3.10.0. Determination of the water extract reaction
3.10.1. From the total sample, a sample weighing 10 g is taken.
3.10.2. Equipment, reagents and materials
Flasks with a capacity of 250 cm 3.
Electric hob.
Porcelain cup with a capacity of 250 cm 3 according to GOST 9147-80.
Glass stick.
Filter paper according to GOST 12026-76.
3.10.3. Conducting a test
The selected sample is placed in a porcelain cup, poured with distilled water (200-250 cm 3) and boiled for 15 minutes. Then the sample is squeezed out, the liquid is filtered and evaporated to a volume of 100 cm 3 and cooled. The reaction of the aqueous extract is determined with red, blue litmus or universal indicator paper. The reaction of the water extract should be neutral.
3.11. Determination of the content of chloride salts
3.11.1. To determine the content of chloride salts, an aqueous extract solution obtained in accordance with clause 3.10 is used.
3.11.2. Equipment and reagents
Drying cabinet with heating temperature 100-110°С.
Equal-arm laboratory scales of the 2nd class according to GOST 24104-88.
Desiccator according to GOST 25336-82.
Test tubes according to GOST 25336-82.
Pipette according to GOST 20292-74.
Flask with a capacity of 1000 cm 3.
Sodium chloride according to GOST 4233-77.
Distilled water according to GOST 6709-72.
Extract water 10 cm 3.
Silver nitrate according to GOST 1277-75, 2% solution.
Nitric acid according to GOST 4461-77, 10% solution.
3.11.3. Preparing for the test
To prepare a standard solution of chlorine ion in a volumetric flask with a capacity of 1000 cm 3, dissolve 0.659 g of slightly calcined sodium chloride and bring the volume of the solution with distilled water to the mark (solution A). 50 cm 3 of solution A is diluted to 1000 cm 3 and an exemplary solution B is obtained containing 0.02 mg of chloride ion per 1 cm 3 or 0.002% of chloride salt. 0.04%.
(Changed edition, Rev. N 1).
3.11.4. Conducting a test
To 10 cm 3 of an aqueous extract, add 0.5 cm 3 of a solution of nitric acid, 0.5 cm 3 of a solution of silver nitrate and mix. At the same time, 0.5 cm 3 of a solution of nitric acid and silver nitrate are added to 10 cm 3 of sample solution B, and mixed. After 5 minutes both solutions are compared. The resulting solution is considered to comply with the requirements of this standard if its opalescence does not exceed that of the reference solution.
3.12. Determination of the content of sulfate salts
3.12.1. To determine the content of sulfate salts, an aqueous extract solution obtained in accordance with clause 3.10 is used.
3.12.2. Equipment, reagents and solutions
Drying cabinet with heating temperature 100-110°С.
Cup for weighing according to GOST 25336-82.
Volumetric flasks with a capacity of 1000 cm 3.
Pipettes - according to GOST 20292-74.
Distilled water according to GOST 6709-72.
Barium chloride according to GOST 4108-72, 5% solution.
Potassium sulfate according to GOST 4145-74.
Extract water 10 cm 3.
3.12.3. Preparing for the test
To prepare a standard solution of sulfate ion in a volumetric flask with a capacity of 1000 cm 3, dissolve 1.814 g of potassium sulfate, dried at 100-105 ° C to constant weight, and bring the volume of the solution with distilled water to the mark (solution A). 10 cm 3 of solution A is diluted with distilled water to 1000 cm 3 , and an exemplary solution B is obtained containing 0.01 mg of sulfate ion in 1 cm 3 or 0.001%, sulfate salt 0.02%.
3.12.4. Conducting a test
To 10 cm 3 of an aqueous extract, add 0.5 cm 3 of a hydrochloric acid solution, 1 cm 3 of a barium chloride solution and mix. At the same time, 0.5 cm 3 of hydrochloric acid solution, 1 cm 3 of barium chloride solution are added to 10 cm 3 of sample solution B and mixed. After 10 minutes both solutions are compared. The resulting solution is considered to comply with the requirements of this standard if its opalescence does not exceed that of the reference solution.
3.13. Determination of the content of calcium salts
3.13.1. To determine the content of calcium salts, an aqueous extract solution obtained in accordance with clause 3.10 is used.
3.13.2. Equipment, reagents and solutions
Volumetric flasks with a capacity of 100 and 1000 cm 3.
Equal-arm laboratory scales of the 2nd class according to GOST 24104-88.
Drying cabinet with heating temperature 100-110°С.
Desiccator according to GOST 25336-82.
Pipettes according to GOST 20292-74.
Test tubes according to GOST 25336-82.
Extract water 10 cm 3.
Ammonia water according to GOST 3760-79, 10% solution.
Ammonium chloride according to GOST 3773-72, 10% solution.
Ammonium oxalate according to GOST 5712-78, 4% solution
Calcium carbonate according to GOST 4530-76.
Hydrochloric acid according to GOST 3118-77, 10% solution.
3.13.3. Preparing for the test
To prepare an exemplary solution of calcium ion, a weighing of 0.749 g of calcium carbonate, dried at 100-105°C to constant weight, is mixed in a volumetric flask with a capacity of 100 cm 3 with 10 cm 3 of water. Then, a solution of hydrochloric acid is gradually added to the flask until calcium carbonate is completely dissolved, and after the disappearance of carbon dioxide bubbles, the volume of the solution is adjusted with distilled water to the mark (solution A). 10 cm 3 of solution A is diluted with distilled water to 1000 cm 3 and an exemplary solution B is obtained containing 0.03 mg of calcium ion per 1 cm 3 or 0.003%, calcium salts 0.06%.
3.13.4. Conducting a test
1 cm 3 of ammonium chloride solution, 1 cm 3 of ammonia solution and 1 cm 3 of oxalic ammonium solution are added to 10 cm 3 of aqueous extract and mixed. At the same time, 1 cm 3 of ammonium chloride solution, 1 cm 3 of solution are added to 10 cm 3 of sample solution B ammonia and 1 ml of ammonium oxalate and mix. After 10 minutes, both solutions are compared. The test solution is considered to comply with the requirements of this standard if its opalescence does not exceed that of the reference solution.
3.14. Determination of the content of reducing substances
3.14.1. To determine reducing substances, an aqueous extract solution obtained in accordance with clause 3.10 is used.
3.14.2. Equipment and reagents
Test tubes with a capacity of 25-30 cm 3 according to GOST 25336-82.
Sulfuric acid according to GOST 4204-77, 10% solution.
Potassium permanganate according to GOST 20490-75 0.1% for cotton wool and 0.2% for cotton-viscose wool.
(Changed edition, Rev. N 1).
3.14.3. Conducting a test
10 cm 3 of an aqueous extract are poured into a test tube, 5-10 drops of sulfuric acid and 3 drops of potassium permanganate are added. The resulting faint coloration of the liquid should not disappear within 5 minutes.
3.15. Determination of the degree of whiteness of cotton wool
3.15.1. The degree of whiteness is determined according to GOST 18054-72 with the following addition: three samples weighing 2 g in the form of a layer are taken from the combined sample in the direction of the comb. A sample of cotton wool is evenly folded and placed on the device carrier in such a way that the surface of the carrier is completely covered with cotton wool.
To determine the degree of whiteness of cotton wool, it is allowed to use the objective universal photometer (FOU) and the Specol-11 device.
The whiteness of cotton wool is determined as the arithmetic mean of the results of three measurements, calculated with an error of not more than 0.1% and rounded up to 1%.
(Changed edition, Rev. N 1).
3.16-3.16.3. (Excluded, Rev. N 1).
3.17. Determination of smell
Determination of smell is carried out organoleptically.
3.18. Definition of sterility
The sterility of cotton wool should be determined in accordance with the current documentation for the control of sterilized cotton wool and dressings for sterility, approved by the USSR Ministry of Health. A sterility test is taken from each batch. A series of sterilized cotton wool is considered the number of products sterilized by the steam method in one cycle in one sterilizer at an industrial enterprise.
3.19. Determining the weight of a bale
3.19.1. The mass of a bale is determined by weighing on a commodity scale.
3.19.2. Results processing
The mass of a bale is calculated as the arithmetic mean of the results of weighing 5 bales, calculated with an error of up to 0.1 kg and rounded up to 1 kg.
3.20. Determination of the mass of packs
3.20.1. The mass of the packs is determined by weighing on a trade scale of the VNC brand.
3.20.2. In case of disagreement between the consumer and the manufacturer, the mass of the packs is determined by weighing on a laboratory equal-arm balance of the 4th class according to GOST 24104-88.
3.20.3. The mass of packs is calculated as the arithmetic mean of the results of weighing 10 packs simultaneously, calculated with an error of up to 0.1 g and rounded up to 1 g.
4. Marking, packaging, transportation and storage
4.1. Marking
4.1.1. Each pack of sterile or non-sterile cotton wool must be marked with colored indelible paint indicating:
emblems of the Red Cross;
type of cotton;
cotton wool mass, g;
sterile or non-sterile;
opening method (for sterile cotton wool);
year of manufacture;
4.1.2. A label is inserted inside the box, bag or cylindrical bale indicating:
the name of the manufacturer and its trademark;
type of cotton;
the number of packs;
series numbers (for sterile cotton wool);
OTK stamp or controller number;
year of manufacture.
4.1.3. Transport marking - in accordance with GOST 14192-77 with the application of the handling sign "Afraid of dampness" and the danger sign according to class 9.2 in accordance with GOST 19433-81 indicating the following additional designations:
on a box, a bag and a cylindrical bale:
type of cotton,
sterile or non-sterile,
series numbers (for sterile cotton),
lot numbers (for non-sterile cotton)
pack net weight, g,
net and gross weights, kg,
year of manufacture;
on a pile of pressed cotton wool:
the name of the manufacturer and its trademark,
type of cotton,
lot numbers,
net and gross weights, kg,
year of manufacture
designations of this standard.
(Changed edition, Rev. N 1).
4.1.4. When the inscription "sterile" or "non-sterile" is applied, it should be highlighted in large print or in a different color.
4.2. Package
4.2.1. Cotton wool should be packed:
sterile and non-sterile - in rolls weighing (25±2), (50±4), (100±5) and (250±10) g;
non-sterile - in compressed bales weighing (20±0.2), (30±0.3), (40±0.4) and (50±0.5) kg.
It is allowed, upon agreement with the consumer, to lay cotton wool in the form of a zigzag ribbon of dense and loose pressing to packs weighing (50 ± 4), (100 ± 5) and (250 ± 10) g.
4.2.2. Rolls of sterile cotton wool should be packed in packs in two layers of paper: inner and outer.
For the inner layer, paper of grades A and B is used, weighing 1 m 2 30-40 g according to GOST 8273-75, brand ODPB-28 according to GOST 16711-84 or glassine according to GOST 2995-73.
For the outer layer, parchment grades A and B are used according to GOST-1341-84.
4.2.3. Rolls of non-sterile cotton wool and packs laid in the form of a zigzag tape must be packed in a single layer of paper or polyethylene film.
Used for packaging:
glassine according to normative and technical documentation;
subparchment according to GOST 1760-86;
wrapping paper grades A and B weighing 1 m 2 30-40 g according to GOST 8273-75 and special packaging paper according to regulatory and technical documentation;
polyethylene film with a thickness of 0.06-0.07 mm according to GOST 10354-82.
4.2.4. Rolls of sterile cotton wool are packed in paper in the following way: rolls of cotton wool are wrapped in the inner layer of paper in 1.5 turns, the ends are sealed with an envelope without gluing. The roll is wrapped annularly with a thread of trade number 10 or 20 according to GOST 6309-87, then, together with the outer layer, it is tightly wrapped in 1.5 turns so that the end of the free thread remains 3-4 cm.
By agreement with consumers, it is allowed to produce rolls of sterile cotton wool without thread wrapping.
The roll, packed in paper, is sealed, and the end sides are sealed with an envelope, after which they are bandaged.
4.2.3; 4.2.4. (Revised edition, Rev. 1).
4.2.5. A roll of non-sterile cotton wool is packed in paper in the following way: a roll of cotton wool is placed on the corner of the paper, after the first turn, the corners of the paper at the ends of the roll are folded inward, and the free corner is sealed.
It is allowed to wrap a roll of cotton wool in 1.5 turns, when laying a zigzag tape - in 1.2 turns with sealing the ends of the paper with an envelope and gluing.
4.2.6. For gluing paper, use:
potato starch according to GOST 7699-78;
corn starch according to GOST 7697-82;
water-soluble methylcellulose grade MTs-100 according to the current regulatory and technical documentation;
dextrin according to GOST 6034-74 for non-sterile cotton wool:
sodium carboxymethylcellulose according to normative and technical documentation;
polyvinyl acetate dispersion according to GOST 18992-80.
(Changed edition, Rev. N 1).
4.2.7. When packing packaged non-sterile cotton wool in a polyethylene film, the ends of the package are sealed.
4.2.8. Packs of sterile and non-sterile cotton wool must correspond to the sizes indicated in Table. 2 and 3.
4.2.9. Packs of sterile and non-sterile cotton wool must be packed in plywood boxes in accordance with GOST 10350-81 or corrugated cardboard boxes in accordance with GOST 13514-82, paper three- or four-layer bags of HM and BM grades in accordance with GOST 2226-88.
It is allowed, in agreement with the consumer, to pack packs of sterile and non-sterile cotton wool in bags made of polyethylene film with a thickness of 0.1 mm in accordance with GOST 10354-82.
A specific type of transport container for packing sterile cotton wool is established by agreement between the manufacturer and the consumer.
(Changed edition, Rev. N 1).
table 2
(Changed edition, Revision, N 1).
Table 3
4.2.9.1. When packing cotton wool in plywood boxes, packs are laid in rows with lining the inside of the box with one layer of paper according to GOST 1341-84, GOST 1760-86, GOST 8273-75 and GOST 2228-81 and special packaging paper according to regulatory and technical documentation.
(Changed edition, Rev. N 1).
4.2.9.2. When packing cotton wool in paper bags, the open end of the bag is sewn up.
4.2.9.3. When packing packs of cotton wool in cylindrical bales, they are stacked in the following way: packs are placed in a vertical position in a ring and tied with a cord in accordance with GOST 29231-91 or twine in accordance with GOST 17308-88 and other regulatory and technical documentation. Then the resulting ring-shaped row of packs is laid one on top of the other and wrapped on all sides with paper in accordance with GOST 1341-84, GOST 1760-86, GOST 2228-81, GOST 8273-75 and sheathed with one layer of non-woven container fabric in accordance with the current regulatory and technical documentation, packaging fabric in accordance with GOST 5530-81 or other types of investment materials, excluding fabrics made from natural fibers.
(Changed edition, Rev. N 1).
4.2.9.4. Packs of cotton wool are placed in cylindrical bales:
4.2.10. In each box, bag or cylindrical bale packs of one type, one mass, sterile or non-sterile, are placed.
4.2.11. Bales of pressed cotton wool are wrapped with one layer of paper according to GOST 1341-84, GOST 1760-86, GOST 2228-81, GOST 8273-75 and special packaging paper in accordance with regulatory and technical documentation and sheathed with one layer of non-woven container fabric in accordance with the current regulatory and technical documentation, investment fabric according to GOST 5530-81 or other types; packaging materials, excluding fabrics made from natural fibres. Then the bales are tied with a rope according to GOST 1868-88 with a diameter of at least 8 mm or a cord according to GOST 29231-91 or a braid made of chemical fibers according to the current regulatory and technical documentation.
(Changed edition, Rev. N 1).
4.2.12. In the regions of the Far North and remote areas, cotton wool is packed in accordance with GOST 15846-79.
4.3. Transportation
4.3.1. Cotton wool is transported by all modes of transport in covered vehicles in accordance with the transportation rules established for each type of transport.
4.4. Storage
4.4.1. Packed cotton wool should be stored in warehouses on pallets or racks in accordance with fire safety rules in conditions that prevent exposure to atmospheric precipitation and soil moisture.
It is allowed to store cotton wool under canopies with tarpaulin cover.
Application
(Required)
Compositions of mixtures for cotton wool production, %
|
name of raw materials |
Standard designation |
Cotton wool absorbent |
|||
|
surgical |
hygienic |
||||
|
cotton |
cotton-viscose | ||||
|
Cotton fiber 1st grade | |||||
|
Cotton fiber 3rd grade | |||||
|
Cotton fiber of the 5th grade | |||||
|
Lint cotton 1st grade I type | |||||
|
Cotton waste N 14, 15, 16 | |||||
|
Viscose staple fiber 0.17 tex | |||||
Note. It is allowed to invest no more than 10% of cotton fiber of the 4th grade in surgical cotton instead of cotton fiber of the 3rd grade.
It is allowed to insert imported viscose fiber into surgical cotton wool instead of viscose fiber according to GOST 10546-80 of similar linear density and cutting length without compromising the quality of cotton wool according to the indicators normalized in this standard.
(Changed edition, Rev. N 1).
In the medical field, a huge amount of materials is used. The most popular among them is surgical hygroscopic cotton wool. Its main difference from other types of cotton wool is that it absorbs liquid much better.
Surgical absorbent cotton can be both sterile and non-sterile. This material is made from defatted cotton or linen fibers. During the production process, cotton fibers are not only combed in the most thorough way, but also bleached.
If we talk about how surgical absorbent cotton is used, it is worth noting that the scope of this product is extremely wide: it is part of dressings, compresses, hygienic cotton pads, balls are made from it; sterile absorbent cotton wool is used to absorb blood and purulent secretions in surgery. Sterile cotton wool is also used for dressings covering open wounds or ulcers.
Surgical absorbent cotton: material production
The production of surgical absorbent cotton cannot be called simple. This process includes several stages:
- loosening and cleaning of cotton fibers;
- chemical processing;
- whitening;
- washing;
- spin;
- loosening;
- drying;
- processing in a scutching machine;
- processing on a carding machine;
- sorting and packaging of finished cotton canvas.
Strictly observed during production GOST 5556-81.
Our company has its own patent for the production of surgical absorbent cotton.
We were able to automate the process of manufacturing our products as much as possible, which allows us to make prices for the products of Emelyan Savostin LLC really low.
Cotton wool medical HYGIENIC- made from 100% cotton, without additives and impurities, is intended for all kinds of medical manipulations related to the treatment of wounds, as well as for removing make-up, daily hygiene care, both for children and adults. Provides maximum absorbent and cleansing effect. Suitable for all skin types and has no contraindications.
- individually packed 250 g in medical parchment, which corresponds to GOST 5556-81. For ease of transportation, cotton wool is placed in multilayer paper bags (kraft bags), which corresponds to GOST 5556-81
Best before date: is not limited
Factory packaging: 50 pcs.
Manufacturers:
LLC "RUSVATA", Russia
Cotton wool medical non-sterile price:
Cotton wool medical surgical non-sterile- used for medical and hygienic purposes, made from natural long-staple raw materials (100% cotton fibers of the highest standard) without the addition of additives and impurities. Surgical cotton wool has a high degree of combing - which ensures the absence of trash impurities and inclusions, its structure is easily distributed into parallel layers . It has a high sorption capacity (effectively absorbs and retains moisture). Cotton wool medical surgical has ideally white color and does not contain extraneous smells. Whitening of cotton wool is carried out in accordance with the requirements of GOST 5556-81 (without the use of chlorine and its components). ")
Manufacturers:
OAZT "Factory of medical devices and materials "NIKA"
LLC "Emelyan Savostin Cotton Factory"
LLC PKF "Razvitie"
Cotton wool surgical non-sterile price:
Cotton wool medical surgical sterile
Cotton wool medical sterile surgical- it is used where there is no possibility of sterilization, but the cotton wool will come into contact with the damaged surface of the skin or with an open wound. Packed cotton wool, processed, remains sterile for 5 years. This property is provided by two-layer film packaging.
Shelf life: 5 years
Manufacturer:
OAZT "Factory of medical devices and materials "NIKA"
LLC "Emelyan Savostin. Cotton Factory"
LLC PKF "Razvitie"
Cotton wool medical surgical sterile price:
Medical cotton wool "Zig-Zag"
Cotton wool Zig-Zag medical hygroscopic cotton is made of 100% natural, long-staple cotton of the highest quality - "Premium" (which is completely free of cotton fluff and any weed impurities). Unlike ordinary rolled cotton wool, which is rolled into a roll, Zig-Zag cotton wool is combed into a single-layer tape and evenly and conveniently laid in individual packaging.
With such a special laying method - Zig-Zag cotton wool, the consumer tears off the required amount of cotton wool from the cotton tape, without affecting the residue in the bag, which allows you to save the bulk from pollution, dust, infection. The top of the plastic bag is perforated for easy opening.
Zig-zag cotton wool is produced packaged in: 50, 100, 200 and 250 grams.
Composition of Zig-Zag cotton wool: 100% cotton
Shelf-life Unlimited.
Manufacturer:
OAZT "Factory of medical devices and materials "NIKA"
LLC "Emelyan Savostin. Cotton Factory"
LLC "RusVata"
Medical cotton wool "Zig-Zag" price:
| Name of product | CJSC "Nika" | LLC "Emelyan Savostin" |
| Medical surgical cotton wool "Zig-Zag" 50 g | RUB 13.00 | RUB 14.65 |
| Medical surgical cotton wool "Zig-Zag" 100 g | RUB 22.00 | RUB 25.50 |
| Medical surgical cotton wool "Zig-Zag" 200 g | RUB 42.00 | RUB 45.00 |
| Medical surgical cotton wool "Zig-Zag" 250 g | RUB 52.00 | RUB 54.00 |
