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.
Photometers
Range 0:00 to 3:50 ppm | USEPA Method 330.5 / DPD | Resolution 0.01ppm
Portable
Range 0:00 to 2:50 ppm | USEPA Method 330.5 / DPD | Resolution 0.01ppm
Range 0:00 to 2:00 ppm | ASTM D859 Method | 0.01ppm resolution
Range 0:00 to 2:00 ppm | EPA method 340.1 | 0.01ppm resolution
Photometers
Range 0 - 200 ppb | ascorbic acid method | Resolution 1 ppb
Range 0:00 to 2:50 ppm | ascorbic acid method | Resolution 0.01ppm
Range 0.0 - 30.0 ppm | amino acid method | Resolution 0.1ppm
The HI 775 Checker®HC is a simple, accurate, and cost effective way to measure alkalinity. Designed as a more accurate alternative to chemical test kits, the HI 775 provides quick, accurate results in four easy steps.
All Product
Range 0 - 300 ppm in salt water | Colorimetric Method | Resolution 1 ppm
Range 0:00 to 3:00 ppm NH3-N | Nessler Method | 0.01ppm resolution
BL983321-1 TDS Mini Controller 0.00 to 19.99 mg/L (ppm) - 230V
HI991301 Multiparameter pH/EC/TDS/°C - EC to 20.00 mS
HI721 Checker HC ® - Iron
BL983317-1 EC Mini Controller upto 10.00 mS/cm, 230V
HI736 Checker HC ® - Phosphorous, ULR
PCA 310 Online Chlorine Analyzer & Controller
BL983318-1 TDS Mini Controller 0.0 to 10.00 g/L (ppt) - 230V
HI727 Checker HC ® - Color of Water
BL983329-1 TDS Mini Controller 0.0 to 999 mg/L (ppm) - 230V
HI2004 - edge® Dedicated Dissolved Oxygen Meter
BL983313-1 EC Mini Controller, 0 to 1999 µS/cm, 230V
HI775 Checker HC ® - Alkalinity in fresh water (dKH)