These bags are specially designed for sampling chlorinated water for example for Legionella testing. Each sterile bag contains a nontoxic, nonnutritive tablet containing active sodium thiosulfate to neutralise chlorine at the time of collection. The bag is EPA approved and has the additional benefits of saving time, utility costs, storage space, disposal costs, and replacing sample containers. With Write-On strip for clean and easy identification. Temperature range: -210 to 82 °C.