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Hanna Instruments

HI721 Iron Checker - Hanna Instruments

HI721 Iron Checker - Hanna Instruments
HI721 Iron Checker - Hanna Instruments
HI721 Iron Checker - Hanna Instruments
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In Stock - Get it tomorrow Tue, Feb. 27th with paid overnight shipping, order by 1 pm today.

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HI721 Iron Checker - Hanna Instruments
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The Hanna Iron Checker bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits have limited accuracy and resolution since they rely upon the human eye to discern differences in color. Professional instrumentation incorporates a light source such as an LED or tungsten lamp with a filter and a light sensing detector to precisely determine ion concentration. Professional instrumentation offers greater resolution and accuracy but can cost hundreds of dollars. The Hanna Iron Checker uses a fixed wavelength LED and silicon photo detector to provide the accuracy of professional instrumentation at the affordable price of a chemical test kit.

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 an indicator of corrosion, iron is monitored in industrial plants and water cooling and heating systems.

Features at-a-glance:

  • Easier to use and more accurate than chemical test kits
  • Dedicated to a single parameter
  • Small size, big convenience
  • Ideal for: Water Quality, Education, Industrial, Municipal Water, Aquarium


Range     0.00 to 5.00 ppm (mg/L)
Resolution     0.01 ppm (mg/L)
Accuracy @ 25°C/77°F     ±0.04 ppm ±2% of reading
Light Source     LED @ 525 nm
Light Detector     silicon photocell
Method     adaptation of the EPA Phenanthroline method 315 B, for natural and treated waters
Environment     0 to 50°C (32 to 122°F); RH max 95% non-condensing
Battery Type     (1) 1.5V AAA
Auto-off     after three minutes of non-use and two minutes after reading
Dimensions     81.5mm x 61mm x 37.5mm (3.2" x 2.4" x 1.5”)
Weight     64 g (2.25 oz.)
Ordering Information     HI721 Checker® is supplied with (2) sample cuvettes with caps, iron reagent starter kit for 6 tests (6 powder reagent packets), battery, instructions and quick start guide.

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