A chlorine dioxide test strip is used to test ClO2 concentration in liquid without the use of field kits or reagents. GardnClean GC Liquid Chlorine Dioxide Test Strips Low, 0-10 ppm [Vial of 50 Strips] Chlorine dioxide test strip is used to test ClO2 concentration in liquid without the use of field kits or reagents. 0 to 10 ppm range Vial include 50 test strips Desiccant vial with flip-top lid preserves freshness of strips New and improved packaging each bottle now has the lot number and expiry date printed on it to ensure compliance with the most stringent
