HANNA Fluoride High Range handheld colorimeter
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.
- 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
- Water testing
- Quick on the spot analysis
- 2 sample cuvettes with caps
- Reagents for 15 tests (re-ordering information HI-739-26 x 30 tests)
- Syringe with tip
- 1 x 1.5V AAA battery
Also available: HI-739-11 Calibration Set.
Battery powered – Allows use away from a power source. Batteries are included with all battery operated products.
Use HI-739-26 Reagents with Hi-739 Fluoride High Range Handheld Colorimeter, Checker®HC, 30 tests.
Use HI-739-11 Calibration Sets with Hi-739 Fluoride High Range Handheld Colorimeter, Checker®HC.
|Range||0.0 to 20.0 ppm|
|Accuracy @ 25°C||±0.5 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|