Iron Checker HC


Improve the accuracy of your water testing results with our simple handheld colorimeter. Bring more precise technology to your testing with our iron colorimeter. You won’t have to struggle to determine colors visually anymore as our handheld colorimeter eliminates the hassle of matching to a color chart by providing a direct digital iron result.

  • Our handheld colorimeter is portable and easily carried in your pocket
  • One-button operation makes getting your iron results simple
  • Trust your results are consistent with the built-in timer


AquaIron DTPA Iron Chelate

This is one of the few additives that most aquaponics professionals agree needs to be regularly added to most aquaponics systems for the treatment and prevention of yellow leaf (Chlorosis).


The HI721 Checker® HC (Handheld Colorimeter) provides a simple, accurate, and cost-effective way to measure iron. Naturally present in water in low concentrations, iron may affect the taste of water, as well as stain both laundry and household appliances. Also, as an indicator of corrosion, iron is monitored in industrial plants and water cooling and heating systems. Designed as a more accurate alternative to chemical test kits, the HI721 provides quick, accurate results in a few easy steps.

Includes: HI 721 Checker®HC is supplied with sample cuvettes with caps (2), powder reagents for iron (6), battery, and instructions.

Product Manual

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