HI-739 Fluoride High Range handheld colorimeter, Checker HC
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HI-739
The HI-739 pocket checker is a simple and accurate way to measure high ranges of fluoride in fresh water.
Checker®HC is supplied with reagents for 15 tests. Use code HI-739-26 (30 tests) for future purchases.
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.
Safety Data Sheets
When using any form of chemical, such as Hanna reagents, it is important you download the relevant safety data sheet and make yourself aware of any precautions you should take when handling the chemical. You can access our library of safety data sheets and download a copy by following the link below.
Please note that the '-' in HI- products should be removed from all searches to find the correct information.
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| Range | 0.0 to 20.0 ppm | |
| Resolution | 0.1 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 |
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