Safely handling and storing specimens in formalin solution is easy with Bitran Formalin Bags. This liquid-tight bag with vapor barrier effectively prevents the transmission of harmful fumes associated with formalin. This unique bag is made by a patented manufacturing process which eliminates leaks. Made from strong 3-mil EVOH, the Bitran Formalin Bag provides long-term protection. For added convenience, this bag is preprinted with biohazard symbol, formalin warnings, and emergency response block as required by OSHA. The double-track zipper provides easy closure and airtight security. Packaged in packs of 250 each, four packs per case.