The job of collecting water samples is easier with the Whirl-Pak^® Stand-Up Thio-Bag^®! A special gusset on the bottom of the bag flattens out when water is put in the bag, allowing it to stand up completely by itself. No rack or other holder is needed to keep the bag upright. Forget washing and sterilizing glass bottles and disposing of expensive vials. Sterile and unbreakable, these bags will save time and money whether working in the lab or in the field. Each bag contains 10 mg of active sodium thiosulfate to neutralize chlorine in the sample. 

Capacity is measured in fluid ounces when the bag is closed and tab is folded over three times. Volume and dimensions are approximate, bags should not be used at temperatures above 180° F (82° C). Bags can be frozen to any temperature, even liquid nitrogen temperatures down to -346° F (-210° C) - careful handling required after freezing. All bags are sterilized after manufacturing. Comes with a convenient write-on strip for easy sample identification.