Color of Water Colorimeter HI727 Hanna Checker - Fresh & Marine Water

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Color of Water Colorimeter HI727 Hanna Checker - Fresh & Marine Water

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SKU: 208626

reg. $48.99

Special Price: $42.99

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Quick Overview

Determine the color of water in your fresh and marine water. The Hanna HI727 Checker HC Handheld Colorimeter for Color of Water bridges the gap between simple chemical test kits and professional instrumentation. This can be used to test the clarity or yellowness of aquarium water, and can be a contributing factor in helping aquarists determine when it’s time for water change or time to replace carbon media.

Accurate, affordable and easy to use. First, zero the instrument with deionized water. Next, prepare the sample according to the Apparent/True color measurement. Last, place the second vial with the prepared sample into the Hanna Color of Water Checker, press the button and read the results. Done.

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Full Details

HI727 Color of Water Colorimeter Manufacturer's Manual

HI727 Color of Water Colorimeter LIterature


  • Easier to use and more accurate than chemical test kits
  • Large, easy to read digits Auto shut-off
  • Dedicated to a single parameter
  • Uses 10 mL glass cuvettes
  • Small Size, Big Convenience
  • Fits in the palm of your hand


  • Range: 0 to 500 PCU
  • Resolution: 5 PCU
  • Accuracy: ±10 ppm ±5% of reading at 25°C
  • Light Source: LED @ 470 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 10 minutes of non-use
  • 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 Standard Methods for the Examination of Water and Wastewater, 21th edition, Colorimetric Platinum Cobalt method


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1 Item

  • Worthless for aquariums By Bud on 10/24/2014

    I bought this and wasn't able to make it work, then I contacted Hanna and found out this is intended to be used for testing turbidity of water in lakes, ponds, streams, etc. I thought it would tell me how clear my reef tank water was so I could determine the effictiveness of various types of filtration or compare it to freshly mixed SW, but no. It doesn't work like that. Thankfully Hanna exchanged the meter for other equivalent value supplies but just save yourself the time and don't buy this, it doesn't have an aquarium application, at all.

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