Test EasyTest 6 in 1 Jbl

JBL Easy test 6 in 1 50 test strips. NEW: With a chlorine test (disinfectant in tap water). Test pH 6.4 to 9.0 (acidic water). KH test from 0 to 20 ° dKH (pH stability of the water). GH test from <1 to> 21 ° dGH (general hardness). Nitrite (NO ₂) from 0 to 10 mg / l (poisonous nitrogen compound). Nitrate (NO ₃ $ $) 0 to 250 mg / l (with algae).