1ppm standard for Chlorine meters calibration Complete with 3 ampules (20mL each) 1ppm calibration standards Country of Origin:United States Package weight:0.3 lb

Product Description Chlorine Standard, 1Ppm, Application For Checking Chlorine Meter Accuracy, Features 3 Ampules, 20Ml Each, For Use With Cl200 Chlorine Meter, Includes 3 Ampules, 20Ml Each. From the Manufacturer Chlorine Calibration Standard