Hanna Iron Checker HI721
For use in fresh and saltwater
The new HI 721 Checker HC portable handheld colorimeter features a resolution of 0.01 ppm (500 points) and 0.04 ppm 2% of reading accuracy. The HI 721 CheckerHC uses an adaptation of Standard Method 315 B.
Hanna Iron Checker HI721.
- Easier to use and more accurate than chemical test kits
Phenanthroline method
±0.04 ppm ±2% of reading accuracy
0.01 ppm (mg/L) resolution (500 points)
Large, easy to read digits
Auto shut off
- Dedicated to a single parameter
Designed to work with HANNA’s powder reagents
Uses 10 mL glass cuvettes
- Small size, big convenience
Weighing a mere 64 g (2.25 oz.), the Checker®HC easily
fits into the palm of your hand or pocket
Use for quick and accurate on the spot analysis
One button operation: zero and measure
Operated by a single AAA battery
- Ideal for:
Industrial, ground and treated waters, mining leachate monitoring and
agricultural irrigation water
- For use in fresh and saltwater
The HANNA HI 721 Checker®HC bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits are not very accurate and only give 5 to 10 points resolution while professional instrumentation can cost hundreds of dollars and can be time consuming to calibrate and maintain. The HANNA HI 721 Checker®HC is accurate and affordable with immediate results.
The new HI 721 Checker®HC portable handheld colorimeter features a resolution of 0.01 ppm (500 points) and ±0.04 ppm ±2% of reading accuracy. The HI 721 Checker®HC uses an adaptation of Standard Method 315 B.
The contoured style of this Checker®HC fits in your palm and pocket perfectly and the large LCD is easy to read. The auto shut-off feature assures the battery life will not be drained if you forget to turn it off.
The HI 721 Checker®HC is extremely simple to use. First, zero the instrument with your water sample. Next, add the reagent. Last, place the vial into the HI 721 Checker®HC, press the button and read the results. It’s that easy.
Product Information:
HI 721 Checker®HC is supplied with sample cuvettes with caps (2), powder reagents for iron (6), battery and instructions.
Range | 0.00 to 5.00 ppm (mg/L) | |
Resolution | 0.01 ppm (mg/L) | |
Accuracy @ 25°C | ±0.04 ppm ±2% of reading | |
Light Source | LED @ 525 nm | |
Light Detector | silicon photocell | |
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 ten seconds after reading | |
Dimensions | 81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”) | |
Weight | 64 g (2.25 oz.) | |
Method | adaptation of the EPA Phenantroline method 315 B, for natural and treated waters. |
Item No. TE-HI721
2 Reviews
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Works well, easy to use - just keep a few things in mind
Only one reagent, similar to the PO checker. Works fine, I tested it by adding Red Sea iron to an empty 10g tank, the test came exactly at what RS claims the concentration should be. I will be using it for my algae growing tank where I want to keep iron higher. Keep in mind that it will likely read 0 in most reef tanks as the concentration of iron in SW is way below checker's capabilities. If you are however following the RS program they recommend keeping iron at 0.15ppm which I guess could be tested with this.
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Handy Little Kit
What a great kit! I test water daily, and I've used several iron test kits. Each one had a flaw, for one reason or another. Not this one. It's self-contained, easy to use, and accurate. If you follow the directions you cannot screw it up!