JBL Easy Test 5 in 1 - 50 test strips.
- pH test from 5.5 to 9.0 (acid content of water).
- CH test from 0 to 40°GCH (pH-stability of water).
- TH test from 0 to 50°GCH (total hardness).
- Nitrite (NO2) from 0 to 20 mg/l (toxic nitrogen compounds)
- Nitrate (NO3) from 0 to 200 mg/l (cause of algae).