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Home > Checker HC Handheld Colorimeters

HI 761

Checker®HC Handheld Colorimeter - Total Chlorine Ultra-Low Range


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The HI 761 Checker®HC is a simple, accurate, and cost effective way to measure ultra-low ranges of total chlorine.  Designed as a more accurate alternative to chemical test kits, the HI 761 provides quick, accurate results in four easy steps.

1.) Step One - Add a sample to the included cuvette(s)
2.) Step Two - Insert sample into the Checker and zero it out
3.) Step Three - Remove sample and add reagent
4.) Step Four – Reinsert sample and click the button to measure your results or…
- Press and hold the button for 3 seconds for a time reaction reading

The HI 761 uses an adaptation of the USEPA method 330.5. The reaction between the chlorine and DPD reagent causes a pink tint in the sample.

FEATURES/BENEFITS:
* Small palm-sized design
* Accurate from ±5ppb ± 5% of reading
* Dedicated to a single parameter
* Uses a single AAA battery
* Auto Power Off after 10 minutes in inactivity
* Built-in timer for timed reaction readings


PRIMARY APPLICATIONS:
* Water Quality
* Education
* Water Purification
* Environmental

Order Information:
The HI 761 Checker®HC is supplied with 2 cuvettes and caps, reagent starter kit (6 packets for total chlorine ultra-low range), 1 x 1.5V AAA battery, and an instruction manual.

  • Specifications
  • Accessories
Range   0 to 500 ppb
Resolution   1 ppb
Accuracy (@25°C/77°F)   ±5ppb ± 5% of reading
Measurement Method   Colorimetric
Light Source   Photodiode @525 nm
Light Detector   Silicon photocell
Method   Adaptation of the USEPA method 330.5. The reaction between the chlorine and DPD reagent causes a pink tint in the sample.
Power Supply   Battery - 1 x 1.5V AAA
Power Auto Off   After 10 min. of inactivity
Environment   0 to 50°C (32 to 122°F); RH max 95% non-condensing
Dimensions   81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”)
Weight   64 g (2.25 oz.)
Accessories
HI 731318 Cuvette Cleaning Cloth
HI 731321 Glass Cuvette Set
HI 731225 Caps for HI 731321 Cuvette
HI 740028P 1.5V AAA Battery Set, 12 pcs.
HI 740157P Electrode Refilling Pipette Set
HI 93703-50 Cuvette Cleaning Solution
Reagents & Standards
HI 761-11 Calibration Checking Set – Total Chlorine ULR Certified Standard Kit
HI 761-25 Chlorine ULR Checker - Reagents for 25 Tests