Nasco Whirl-Pak™ Write-On Stand-Up Thio Sample Bag

Description

• Bag stands up completely by itself and contains 10 mg of active sodium thiosulfate to neutralize chlorine in water samples
• 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