Standard swab 604

cottonplastic

It is made of cotton swabs made of plastic rods and absorbent cotton and soaked in 75% alcohol solution. 1) the cotton head of the alcohol swab shall be clean and uniform in color, and the plastic rod shall be smooth and without burr. 2) the size of alcohol swab should meet the requirements of table 1 (length of plastic rod: 7.5±0.59; diameter of plastic rod: 0.2±0.05) Unit: cm) 3) binding firmness of cotton head and cotton stalk: the number of cotton head and stalk shedding per 100 medical alcohol cotton swabs should not be more than 5%. 4) tightness: the minimum packaging of medical alcohol swabs shall not have liquid leakage. 5) alcohol shall be provided with qualification certificate and quality documents by the supplier, and its performance shall conform to the pharmacopoeia of the People's Republic of China. 2010 edition two regulations. 6) medical absorbent cotton properties: should be soft and elastic white fiber, no color spots, stains and foreign bodies, odorless, tasteless. 7) whiteness: the whiteness of medical absorbent cotton should not be less than 80 degrees. 8) soluble matter in water: residue in 100ml test solution should be less than 0.5%. 9) ph: phenolphthalein indicator should not show pink and bromocresol purple indicator should not show yellow in 100ml test solution. 10) easy oxides: add potassium permanganate in 40ml test solution and the red color should not disappear completely. 11) water absorption time: medical absorbent cotton should sink below the liquid level within 10s. 12) water absorption: the water absorption per gram of medical absorbent cotton should not be less than 23g.