Whirl-Pak* Standard Sterile Thio-Bag*

Specially designed for sampling chlorinated water. This single service, sterilized, lightweight, unbreakable container is always ready for immediate use. Bags have a convenient write-on strip and markings for measurements.
Used by many states and EPA approved, this strong transparent bag holds a nontoxic, non-nutritive tablet containing active sodium thiosulfate to neutralize chlorine at the time of collection.