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  1. Iron (Ferrous) Color Disc Test Kit, Model IR-18C, 0-7 mg/L - Hach

  2. Hardness, iron, and pH test kit, model HA-62A | Hach

  3. Iron color disc test kit, model IR-18B | Hach - Overview

  4. Hach 146401 Iron Color Disc Test Kit, Model IR-18B

  5. Iron Test Strips (Total Dissolved Iron), 0-5 mg/L - Hach

  6. Hardness, Iron, and pH Test Kit, Model HA-62B - Hach

  7. Hardness, iron, and pH test kit, model HA-62B | Hach Ireland

  8. Hardness, Iron, and pH Test Kit, Model HA-62B - Hach

  9. Iron color disc test kit, model IR-18A - Hach

  10. Product Directory - Hach