The HI 771 Checker®HC is a simple, accurate, and cost effective way to measure ultra-high ranges of chlorine. Designed as a more accurate alternative to chemical test kits, the HI 771 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 771 uses an adaptation of the standard methods for water and wastewater 4500Cl.
Specification :
| Range | 0 to 500 ppm | |
| Resolution | 1 ppm | |
| Accuracy (@25°C/77°F) | ±3 ppm ± 5% of reading | |
| Measurement Method | Colorimetric | |
| Light Source | Photodiode @525 nm | |
| Light Detector | Silicon photocell | |
| Method | Adaptation of the standard methods for water and wastewater 4500Cl. | |
| 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”) | |
| Dimensions | 81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”) | |
| Weight | 64 g (2.25 oz.) |
Reagents for HI 723 Checker HC ®, 25 Tests
เครื่องวัดปริมาณโครเมี่ยม ช่วงสูง รุ่น HI723
HI7006/1G - 6.86 pH@25°C - SQ - 3.78L
เครื่องวัดปริมาณคลอรีนอิสระ รุ่น HI701
HI76313 Platinum, four ring Conductivity/TDS probe
เครื่องวัดค่าเหล็ก รุ่น HI721
Calibration Standard HI 701 Checker HC ®
HI764 Checker HC ® - Nitrite, ULR
HI70038C - 6.44 g/l (ppt) TDS@25°C Zert. - 25x20ml
HI5011 - 11.00 pH@25°C - TQ - 500ml
HI70032C - 1382 mg/l (ppm) TDS@25°C Cert. - 25x20ml
HI770 Checker HC ® - Silica, HR 

