Pool Water Tester 15 Parameters - Easy to Use Home Pool & Hot Tub Tester - Measures 15 Water Parameters With Professional Level Accuracy - Works with solid or liquid reagents, App and Software, IP68 Waterproof, Bluetoothliquid reagents for Pool Lab and PoolWaterLAB - 250 tests DPD 1A+ DPD 1B ( Chlorine Free )

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