Checker HC Handheld Colorimeter - Free Chlorine

Item #: HI701
Manufacturer: Hanna Instruments
from: $49.00 sale: $40.18
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Product Description

The NDHI 701 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 NDHI 701 Checker®HC is accurate and affordable.

This Checker®HC portable handheld colorimeter features a resolution of

0.01 ppm and ±0.03 ppm (mg/L) ±3% of reading accuracy. It also uses an EPA approved DPD method.

The contoured style of the 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 NDHI 701 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 Checker®HC, press the button and read the results. It’s that easy.


  • Easier to use and more accurate than chemical test kits
  • Dedicated to a single parameter
  • Small size, big convenience
  • Ideal for: Swimming pools and spas, fruit and vegetable sanitation, disinfection, drinking water and quality control checks


Range   0.00 to 2.50 ppm (mg/L)
Resolution   0.01 ppm (mg/L)
Accuracy @ 25°C   ±0.03 ppm ±3% 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 two 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 USEPA method 330.5, DPD method