HI-739 Håndholdt kolorimeter til højt fluorområde, Checker HC

The HI-739 pocket checker is a simple and accurate way to measure high ranges of fluoride.

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
• ±0.5 ppm ±5% of reading
• 0.1 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
• Not suitable for aquariums of any kind

Supplied with:

• 2 sample cuvettes with caps
• Reagents for 15 tests (re-ordering information HI-739-26 x 30 tests)
• Syringe with tip
• Pipette
• 1 x 1.5V AAA battery
• Instructions

Four steps. One click. Instant Readout.

  1. ‘Zero’ the Checker®HC with your vial & 10ml water sample inside

  2. Take the vial out and add your reagent

  3. Place your vial into your Checker®HC

  4. Press the button and read the results

Also available: HI-739-11 Calibration Set. Use HI-739-11 Calibration Sets with Hi-739 Fluoride High Range Handheld Colorimeter, Checker®HC.

Use HI-739-26 Reagents with Hi-739 Fluoride High Range Handheld Colorimeter, Checker®HC, 30 tests.