PoolCheck® Phosphate. Because phosphates are the primary food source for algae, the more phosphate, the more algae. High phosphate levels can produce resistant algae and interfere with the sanitizing property of chlorine. Regularly testing for phosphates can help to ensure a properly maintained pool. Reliable results are available in 30 seconds.

Tests for:
- Phosphate (PO4)

- No instrument required
- No liquids, tablets or powders to handle
- Results in 30 seconds
- 9 colour pads for increased precision
- lowest detection 0.1 ppm (100 ug/l)

Improved colour chart and resolution with extra colour blocks added!

Phosphate: 0, 100, 200, 500, 1000, 1500, 2000, 3000, 4000 ug/L (ppb)

Contains 50 tests.

Made in USA