In general there are two ways of delivery of the finished products, one is the non sterile way, the other is a sterile way. The medical absorbent cotton can be used directly, and the absorbent cotton which is packaged in a non sterile way must be sterilized by high temperature steam or ethylene oxide. Purchase medical cotton should pay attention to:

　　 (1) the first look at the finished product packaging logo and product specifications. Whether it is sterile or non sterile fashion factory, the product specification or product packaging should be marked. Aseptic packaging of medical gauze, packing, marking must be stated: the validity of sterilization, ex factory date or production batch number, breakage of packing disable the description or identification, the use of disposable or banned again the use of the logo. Check the validity of the product when purchasing, found that the packing damage is no longer the purchase or use.

　　 (2) look at the appearance of the product. Products should be soft and flexible white fiber, no stains, stains and foreign body, no smell, tasteless, in the UV light should not show strong blue fluorescence.