The HI-761 Checker 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.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:
- 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
Ideal for:
- Swimming Pools and spas
- Water Quality – Drinking Water
- Education
- Water Purification
- Environmental
- Fruit and vegetable sanitation/disinfection & Food Processing
- hospitality
Specifications
| Range | 0 to 500 ppb | |
| Resolution | 1 ppb | |
| Accuracy (@25°C/77°F) | ±5ppb ± 5% of reading | |
| Measurement Method | Colorimetric | |
| Light Source | LED @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.) |
