Pool Check Pro Ozone Test Strips Bottle of 50 Tests - INCL. 12 PK Our Pool Check Pro Ozone for water quality testing is a unique test strip that is designed to test for levels of Ozone in pool water. Pool Check Ozone Check test strips give you accurate results in just 30 seconds. The unique, patented, SenSafe strip allows for low level detection without sacrificing accuracy. It detects 0.0, 0.05, 0.1, 0.2, 0.3, 0.4, >0.5 ppm (mg/L).
