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
3 Reviews
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Easy Read
The item is easy to read and instructions are clear. The items don't really fit well in the nice box though, and the reagent is difficult to get into the vial. I always spill some of it! Overall makes records easy to keep.
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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!
