Pack water quality testing Residual chlorine Test® (simple device) (free/DPD method)

---------------------------------------------------------------------- ●Measurement item: Residual chlorine (free/DPD method) ●Number of measurements: 50 ●Simple water quality test equipment ●★Measurement principle: DPD colorimetric method ●★Measurement scale: 0.1, 0.2, 0.4, 1, 2, 5 mg/L ●★Measurement time: 10 seconds ●★Contents: 50 tubes (10 laminated bags containing 5 tubes), 1 storage bag, 1 standard color (in case), 1 copy of usage