he 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.

checker compact and portable meter

Compact, Portable Design

checker built-in timer

Built-in Timer

checker one-button operation

One-Button Operation

 

Details

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. Designed as a more accurate alternative to chemical test kits, the HI772 provides quick, accurate results in four easy steps:

How to use Hanna Checker Handheld Colorimeter

Features at-a-glance:

  • Easier to use and more accurate than chemical test kits
  • Dedicated to a single parameter
  • Small size, big convenience
  • Ideal for: Aquaculture & Aquariums, Water Quality

Video

 
 

Wistia video thumbnail

Alkalinity, Seawater

Seawater Alkalinity Range 0.0 to 20.0 dKH
Seawater Alkalinity Resolution 0.1 dKH
Seawater Alkalinity Accuracy ±0.3 dKH or ±5% of reading, whichever is greater
Seawater Alkalinity Method colorimetric method.

General Meter

Automatic Shut-Off after ten minutes of non-use
Battery Type/Life (1) 1.5V AAA
Environment 0 to 50°C (32 to 122°F); RH max 95% non-condensing
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.)
Photometer/Colorimeter Light Source LED @ 610 nm
Photometer/Colorimeter Light Detector silicon photocell
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.

(332-1)

SKU 332-1
Barcode # D101DAE9
Brand Hanna Instruments
Shipping Weight 0.5000kg
Shipping Width 0.060m
Shipping Height 0.120m
Shipping Length 0.200m
Unit Of Measure ea

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