PHMB pool tester, phmb treated (measurement of hydrogen peroxide associated with PHMB) also called biguanide analyzes pH, alkalinity and peroxide. Advantages: Strips provide reliable, instant, accurate results Essential for all PHMB pool owners It will allow you to keep your water balanced It will measure the levels of peroxide, pH and total alkalinity PHMB (biguanide) is a chlorine - free disinfectant. Features: Water analysis using strips Number of strips: 25 Result time: 15 sec Function: 3 in 1 Recommended frequency for pool testing: 2 times/week Above - ground, in - ground pools Reference: AQC - 470 - 0010 Tip: In order to obtain a complete diagnosis, test the pool water at both ends and compare the results. For a spa, it is recommended to test the water with Aquachek before each use. Packaging: 1 x Peroxide tester for pool and spa analysis Delivered in its original packaging