The absorbent cotton ball is degreased by cotton, because the surface layer contains no fat, and has good hydrophilicity. Soaking in 75% alcohol can be used as a sterile cotton ball.
The best raw materials are cotton, caustic soda (NaOH, industrial grade), and water.
Method of Making Tear the cotton and remove the visible impurities, such as pebbles and dead leaves. Wash the cotton with water until the effluent is clear. Put the cotton in the enamel pot, add water to just be submerged, then add 2% to 5% of NaOH equivalent to the weight of the water in the pot, cover and boil and simmer for 10 minutes. Cool, rinse with plenty of water, wash around for about 10 minutes. Wash the washed cotton on clean paper.
Caution The alkali solution (NaOH) is highly corrosive and must be worn with gloves and a plastic bandage. The skin should be washed immediately. Do not cook for too long, so as not to reduce the degree of polymerization, affecting the esterification. Pay attention to dust when drying.
Cotton Ball This product is a medical dressing made by using a cotton wool roll to form a mass. Its various properties such as water absorption, acidity and alkalinity meet the requirements of YY0330-2002 medical absorbent cotton. Cotton wool should be submerged in the liquid surface within 10s; The sterilized cotton balls transported by car shipping vehicles should be sterile after being sterilized with ethylene oxide; After ethylene oxide sterilization, the ethylene oxide is stored for 15 days. Residual amount should not exceed 10ug/g