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HANNA Fluoride Low Range Handheld Colorimeter

£76.38

Fluoride is one of the very few chemicals that have been shown to cause significant effects in people through drinking-water. Fluoride has beneficial effects on teeth at low concentrations in drinking-water, but excessive exposure to fluoride in drinking-water or in combination with exposure to fluoride from other sources, can give rise to a number of adverse effects.

Water fluoridation is the controlled addition of fluoride to a public water supply to reduce tooth decay. Fluoridated water operates on tooth surfaces: in the mouth it creates low levels of fluoride in saliva which reduces the rate at which tooth enamel de-mineralises and increases the rate at which it re-mineralises in the early stages of cavities.

A 1994 World Health Organisation expert committee suggested a level of fluoride from 0.5 to 1.0 mg/L, depending on climate. Bottled water typically has unknown fluoride levels, and some domestic water filters remove some or all fluoride.


Key features

      • Accurate and easy to use
      • Adaptation of SPADNS method
      • ±0.05 ppm ±5% of reading
      • 0.01 ppm resolution
      • Designed to work with Hanna reagents
      • Large easy to read digits
      • Auto shut-off

 

Ideal for

      • Water testing
      • Quick on the spot analysis



Supplied with

  • 2 sample cuvettes with caps
  • Reagents for 6 tests (re-ordering information HI-729-26 x 20 tests
  • Syringe with tip
  • 1 x 1.5V AAA battery
  • Instructions

Also available: Calibration set HI-729-11

Four steps. One click. Instant Readout.

1. ‘Zero’ the Checker®HC with your vial inside




2. Place a 10ml water sample into the vial and add your reagent




3. Place your vial into your Checker®HC




4. Press the button and read the results

Battery powered – Allows use away from a power source. Batteries are included with all battery operated products.

Use Calibration Check Set HI-729-11 with the Hi-729 Fluoride Low Range Handheld Colorimeter, Checker®HC.

Use reagent HI-729-26 with the Hi-729 Fluoride Low Range Handheld Colorimeter, Checker®HC, x 20 tests.

Specifications

Specifications list

Specifications

Range 0.00 to 2.00 ppm
Resolution 0.01 ppm
Accuracy @ 20°C ±0.05 ppm ±5% of reading
Light Source LED @ 575 nm
Light Detector silicon photocell
Environment 0 to 50°C (32 to 122°F); RH max 95% non-condensing
Battery Type (1) 1.5V AAA
Auto-off after two minutes of non-use and ten seconds after reading
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 SPADNS method