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Home > Checker HC Handheld Colorimeters
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.
| 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 |
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