Checker HC Handheld Colorimeter - Silica

Item #: HI770
Manufacturer: Hanna Instruments
from: $49.00 sale: $40.18
Quantity unavailable. Try selecting a smaller quantity.

Product Description

The NDHI 770 Checker®HC is accurate and affordable. This portable handheld colorimeter features a resolution of 1 ppm (200 points) and ±2 ppm ±5% of reading accuracy.

The contoured style of the NDHI 770 Checker®HC fit in your palm and pocket perfectly and the large LCD is easy to read. The auto shut off feature assures the battery life will not be drained if you forget to turn it off.

The NDHI 770 Checker®HC is simple to use:
  1. Zero the instrument with your water sample.
  2. Add the reagents in order, respecting all the indications.
  3. Place the vial into the Checker®HC
  4. Press theoperational button for about 3 seconds and the display will show the countdown prior to the measurement or, alternatively, wait for 2 minutes after last reagent adding and press operational button.

The Checker®HC displays concentration in ppm of Silica as SiO2.


  • Easier to use and more accurate than chemical test kits
  • Dedicated to a single parameter
  • Small size, big convenience
  • Ideal for aquaculture



Range   0 to 200 ppm
Resolution   1 ppm
Accuracy @ 20°C   ±2 ppm ±5% of reading
Light Source   LED @ 470 nm
Light Detector   silicon photocell
Environment   0 to 50°C (32 to 122°F); RH max 95% non-condensing
Battery Type   1.5V AAA
Auto-off   after two minutes of non-use
Dimensions   81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”)
Weight   64 g (2.25 oz.)
Method   adaptation of the USEPA METHOD 370.1 for drinking, surface and saline waters, domestic and industrial wastes and Standard Method 4500-SiO2 C