Handheld Chlorine Tester
The Chlorometer Duo is a handheld chlorine tester that conducts tests using a DPD method and photometric analyzer. The waterproof device can test for chlorine levels from .01 to 5 mg/L with an HR selection for ranges from 1 to 250 mg/L. Its memory stores the last 10 results, and can maintain calibration between tests. Two AA batteries allow for up to 5,000 readings before they need replacement.