Pack Test 10-times Residual Chlorine (Free) ZAK-ClO-DP 1 box

It can measure free residual chlorine in various test waters such as tap water and pool water. Measurement items: Residual chlorine (free, DPD method) Number of measurements: 10 Simple water quality testing equipment Measurement principle: DPD colorimetric method Measurement scale: 0.1, 0.2, 0.4, 1, 2, 5 mg/L Measurement time: 10 seconds Contents: 10 tubes (10 laminated bags containing 1 tube each), 1 standard color sheet, 1 instruction manual