HANNA MARINE Alkalinity (dKH) (HI772 / Checker HC)

Brand: HANNA

HANNA MARINE Alkalinity (dKH) (HI772 / Checker HC) is backordered. We will ship it separately in 3 to 7 days.

Product information "HI772 Checker HC ® - MARINE Alkalinity (dKH)"

The HI772 Checker®HC (Handheld Colorimeter) provides a simple, accurate and cost-effective way to measure alkalinity in degrees of calcium hardness, commonly abbreviated as dKH. Critical to marine environments, alkalinity not only provides the carbonate ion required for calcium carbonate skeletal regeneration of coral reefs, but it also acts as a pH buffer against large changes in acidity.




0.0 to 20.0 dKH


0.1 dKH

Accuracy @ 25°C/77°F

±0.3 dKH ±5% of reading


Light Source

LED @ 610 nm

Light Detector

silicon photocell


colorimetric method


0 to 50°C (32 to 122°F); RH max 95% non-condensing


Battery Type (1) 1.5V AAA
Auto-off after ten minutes of non-use
Dimensions 86.0 mm x 61.0 mm x 37.5 mm (3.4" x 2.4" x 1.5")
Weight 64 g (2.25 oz.)