The Corning® Gosselin™ Water Sampling Bottle is designed to meet water sample collection requirements of the United States EPA and Health Canada. These lightweight 125 and 250 ml PET bottles are pre-dosed with 160 mg/L pentahydrated sodium thiosulfate, which provides enhanced stabilization of chlorinated water.

• PET is transparent and break-resistant
• Sterile bottle with molded graduations
• Powdered sodium thiosulfate dissolves easier than tablets
• Labeled with lot number, expiration date, and sodium thiosulfate dosage
• Convenient shrink-wrapped packs of 24 bottles
• Wide neck for easy sample collection
• Tamper-evident screw cap ensures integrity until collection

The 160 mg/L pentahydrated sodium thiosulfate dosage is in accordance with the 22nd edition of the Standard Method published by the American Public Health Association (APHA), the American Water Works Association (AWWA), and the Water Environment Federation (WEF). The bottle will neutralize up to 15 mg/L of free chlorine in water samples.