Water Polution Tubes

Gas All SULPHIDE ION Chloride Ion CYANIDE ION OZONE ION CHLORINE OXIDE ION MERCURY ION CHROMIUM ION Iron Ion Copper Ion ZINC ION NICKEL ION Type All 211H 218 221L 221LL 222 271 273 281 284 285 291 DCL-4L DCL-5M DCR-2 DCY-2 DCY-4M DSU-2M DSU-3 DSU-4M Measuring range All 0.1 - 10mg/l 0.5 - 20 ppm 0.5 - 20ppm 0.5 - 50 ppm 0.5 - 50mg/l 1 - 100 ppm 1 - 20mg/l 1 - 50mg/l 10 - 1000ppm 10 - 2000 ppm 10 - 200mg/l 2 - 300 ppm 25 - 1000mg/l 3 - 20mg/l 5 - 200 ppm 5 - 50mg/l 50 - 500 ppm Shelf life All Brand All