HI772 Marine Alkalinity (dKH) Checker® HC

The Hanna Marine Alkalinity (dKH) Checker® bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits have limited accuracy and resolution since they rely upon the human eye to discern differences in color. Professional instrumentation incorporates a light source such as an LED or tungsten lamp with a filter and a light sensing detector to precisely determine absorbance and ion concentration. This level of instrumentation also offers greater resolution and accuracy, but can cost hundreds of dollars. The Hanna Marine Alkalinity Checker^® measures alkalinity in dKH units, using a fixed wavelength LED and silicon photo detector to provide the accuracy of professional instrumentation at the affordable price of a chemical test kit.

• Compact, Portable Design
• Built-in Timer
• One-Button Operation

• Seawater Alkalinity Range	0.0 to 20.0 dKH
  Seawater Alkalinity Resolution	0.1 dKH
  Seawater Alkalinity Accuracy	±0.3 dKH ±5% of reading
  Seawater Alkalinity Method	colorimetric method.
  Photometer/Colorimeter Light Source	LED @ 610 nm
  Photometer/Colorimeter Light Detector	silicon photocell
  Battery Type/Life	(1) 1.5V AAA
  Automatic Shut-Off	after ten minutes of non-use
  Environment	0 to 50°C (32 to 122°F); RH max 95% non-condensing
  Weight	64 g (2.25 oz.)
  Dimensions	86.0 mm x 61.0 mm x 37.5 mm (3.4″ x 2.4″ x 1.5″)
  Ordering Information	HI772 Checker® is supplied with (2) sample cuvettes with caps, alkalinity reagent starter kit for 25 tests (1 bottle of alkalinity reagent), (1) 1 ml syringe and tip, ­­­ battery, instructions, and quick start guide.