Whirl-Pak® Thio-Bags, 4 oz (100 ml), Box of 100 Dissolved Oxygen Testing has a shatterproof magnifying lens

has a shatterproof magnifying lens and features a snap on/off cap that allows it to float or sink

making it an essential replacement part for hatcheries

Produc Code: 70300

Dust Cover

also known as glycerol

Whirl-Pak® Thio-Bags, 4 oz (100 ml), Box of 100 Dissolved Oxygen Testing has a shatterproof magnifying lensProduct Code: B01040WA Specifically designed for sampling chlorinated water from municipalities, swimming pools, waste water, and other areas to test for fecal coliforms or other bacteria. Each sterile bag contains a nontoxic, nonnutritive tablet containing active sodium thiosulfate to neutralize chlorine at the time of collection. The bag is EPA approved and has the additional benefits of saving technicians time, utility costs, storage space, and