Specifically designed for sampling chlorinated water from municipalities, swimming pools, waste water and other areas to test for fecal coliforms or other bacteria. Each sterile bag contains a nontoxic,nonnutritive tablet containing active sodium thiosulfate to neutralize chlorine at the time of collection. The bag is EPA approved and has the additional benefits of saving technician time, utility costs, storage space and disposal costs by replacing other sample containers. Each sterilized bag has a convenient write-on strip. 100/box.