HI-711 Total Chlorine Handheld Colorimeter - Checker®HC

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  • Regular price £70.00
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Key features

  • Fully portable, fitting easily into both palm and pocket
  • 0.00 to 3.50 ppm
  • Checker®HC is supplied with reagents for 6 tests. Use code HI-711-25 (25 tests) for future purchases.
  • High precision results - more accurate than chemical test kits
  • Auto shut-off feature means the Checker cannot be left on by mistake

Supplied with

  • 2 sample cuvettes
  • Cuvette cap
  • Starter pack of reagents x 6 (re-ordering information: HI-711-25 x 25 tests)
  • 1 x 1.5 AAA battery
  • Instructions


Range 0.00 to 3.50 ppm
Resolution 0.01 ppm (mg/L)
Precision 3% of reading ±0.03 ppm (mg/L) @ 25°C
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 2 minutes of non-use and 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 EPA approved DPD method Standard Method 4500-Cl G.
PLEASE NOTE: In some cases, samples may contain other parameters which may interfere with results
Interference may be caused by: Bromine, Iodine, Ozone, Oxidised forms of Chromium and Manganese. In case of water with hardness greater than 500 mg/L CaCO3, shake the sample for approximately 2 minutes after adding the powder reagent.
If the water used for this procedure has an alkalinity value greater than 250 mg/L CaCO3 or acidity value greater than 150 mg/L CaCO3, the colour of the sample may develop only partially, or may rapidly fade. To resolve this, neutralise the sample with diluted HCl or NaOH.