- -7.9%
- -7.9%
Strong points
- Digital photometer at the price of a chemical analysis kit
- Quality, fast and accurate measurements
- Very easy to use (1 key)
- Lightweight (65 g) and compact, slips into any pocket
- Measurements in accordance with approved methods
- Large reading screen
- Robust and practical
- Surely amazing
Field applications
- Aquaculture
- Natural waters
- Waste
- Potable water
- Agriculture
Specifications
| Range | 0.08 to 5.50 mg/L (ppm) |
|---|---|
| Resolution | 0.01mg/L (ppm) |
| Exactness | ±0.04 mg/L (ppm) ±2% of reading |
| Method | Adaptation of the "Phenantroline Method", Method approved by the EPA, the reaction between iron and the reagent causes an orange color in the sample |
| Light source | 525nm LED |
| Light detector | Silicon photocell |
| Pile | 1 x 1.5V AAA battery |
| Self-extinguishing | After 2 minutes of non-use and after each reading |
| Dimensions | 81.5 x 61 x 37.5mm |
| Weight | 64g |
Product Details
HI721
Reviews about this product
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Alain C.
Published May 02, 2026 at 07:10 pm (Order date: Apr 23, 2026)The mini photometer perfectly fulfilled its mission of measuring the iron content of my heating water. Follow the testing procedure closely and clean the test tube well after each measurement. (Translated review)
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János M.
Published Nov 28, 2025 at 05:05 pm (Order date: Nov 18, 2025)It gives perfect accurate values. I use it for a planted aquarium, it's light years better than my previous cept tests. It's more expensive, but I wish I had bought it 10 years ago....
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Olivier S.
Published Apr 21, 2025 at 09:25 pm (Order date: Apr 16, 2025)Very precise device (Translated review)
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Patrick B.
Published Jun 26, 2023 at 04:45 pm (Order date: Jun 16, 2023)Putting the test powder in the cuvette isn't easy, and there's always some left in the bag. (Translated review)
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Jos B.
Published Feb 26, 2023 at 12:01 am (Order date: Nov 23, 2022)Precise and pleasant to use (Translated review)
Hanna Instruments - Iron Checker Mini Photometer - Fe - HI721