Similar to 1303R20 bags except contain a nontoxic, non-nutritive tablet impregnated with 10 mg of sodium thiosulfate. For dechlorinating water samples in accordance with APHA Standard Methods for the Examination of Water and Wastewater, 17th Ed. (1989), Method 1060 B. Sterilized by ethylene oxide. Should not be used at temperatures near or at the boiling point (212°F, 100°C). Approved by the and USDA for food sampling. Carton of 100, contains 4 packages of 25 bags.