4 oz. Retain Whirl-Pak® Bag

For long-term storage (up to two years), the Whirl-Pak® Retain Bag will protect the sample and save money and space. They are made from a barrier film or polyethylene and polyester and have extremely low permeability for oxygen and moisture. The result is that sample integrity will be maintained during storage for both liquids and solids. These bags are sterilized with radiation, because gas sterilization will not penetrate this film.