Hanna Instruments

Hanna Instruments - Iron Checker Mini Photometer - Fe - HI721

  • -7.9%
  • -7.9%
Hanna Instruments - Iron Checker Mini Photometer - Fe - HI721
Hanna Instruments - Iron Checker Mini Photometer - Fe - HI721

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€75.99
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In stock (2)

Checker HC mini-photometer for the measurement of iron up to 5.5 mg/L (ppm). .

HI 747 is supplied with 2 measuring cuvettes and their caps, 6 sachets of powdered reagent and the battery.

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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
  • Powder reagents for iron (HI 721), 25 tests - HI 721-25

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

What they think about it
(and they are right...)

Reviews about this product
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9/10


Based on 4 reviews

  • Image utilisateur János M.
    Published Nov 28, 2025 at 05:05 pm (Order date: Nov 18, 2025)
    5

    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....

  • Image utilisateur Olivier S.
    Published Apr 21, 2025 at 09:25 pm (Order date: Apr 16, 2025)
    5

    Very precise device (Translated review)

  • Image utilisateur Patrick B.
    Published Jun 26, 2023 at 04:45 pm (Order date: Jun 16, 2023)
    3

    Putting the test powder in the cuvette isn't easy, and there's always some left in the bag. (Translated review)

  • Image utilisateur Jos B.
    Published Feb 26, 2023 at 12:01 am (Order date: Nov 23, 2022)
    5

    Precise and pleasant to use (Translated review)