1. Composition of medical gauze Medical gauze is made of cotton fiber of mature seeds without repeated processing, which is spun and woven into plain cotton cloth, and then degreased, bleached and refined into a degreased gauze for medical use. Medical gauze products are generally in the form of folding and reel. (1) Fold the piece of gauze into the required size, and then fold it to the required layer with a flap, and then carry out small packaging. (2) Roll the bleached gauze into a roll, including one layer, two layers, three layers and four layers, depending on the needs. 2. It is mainly used for one-time blood sucking and application in surgery and family health care in hospitals and clinics. 3. Basic quality requirement whiteness: the whiteness of medical gauze shall not be less than 80 degrees. Density of warp and weft: density of warp (heel/10cm) × Weft density, the difference shall not exceed ± 5% of the indicated nominal value. Soluble matter in water: the residue left in the 10Oml test solution shall not exceed 0.3% Acidity and alkalinity: the phenolphthalein indicator added to the 10Oml test solution shall not show pink, and the bromocresol purple indicator added shall not show yellow. Water absorption time: sink below the liquid level within 10 seconds. Soluble substance in ether: the residue left in 10Oml test solution shall not be greater than 0.5% Surfactant: The height of the surfactant (foam) in the test solution shall not exceed 2mm 4. Precautions for purchase and use When purchasing medical gauze, first look at the package identification and product manual of the finished product. Generally, there are two ways to supply finished products from the factory, one is non sterile, the other is sterile. Whether the product is delivered in sterile or non sterile way, the manufacturer's product manual or finished product package shall be clearly marked for the convenience of user's selection and use. When purchasing medical gauze, you should look at the appearance of the product. The product should be soft, odorless, tasteless, pure white in color, free of other fibers and processing substances, and should not show strong blue fluorescence under ultraviolet light.
