Lamotte phosphate test strips

Lamotte Insta test phosphate test strips. 50 per pkt. Designed for pools and spas but suitable for testing drinking water and environmental testing. Measures 0, 100, 200, 300, 500, 1000 and 2500 ppb. This is 0, 0.1, 0.2, 0.3, 0.5, 1 and 2.5 ppm. Generally phosphate should be below 0.1 ppm. Levels over 0.3 ppm indicate excess phosphate and this can lead to water quality problems including algal growth.