Description
The HI739 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 demineralizes and increases the rate at which it remineralizes in the early stages of cavities. A 1994 World Health Organization expert committee suggested a level of fluoride from 0.5 to 1.0 mg/L, depending on climate Designed as a more accurate alternative to chemical test kits, the HI739 provides quick, accurate results in a few easy steps.
| Specification | Detail |
|---|---|
| SKU | HI739 |
| Range | 0.0 to 20.0 ppm |
| Resolution | 0.1 ppm |
| Accuracy @ 25°C (77°F) | ±0.5 ppm ± 5% of reading |
| Light Source | LED @ 575 nm |
| Light Detector | silicon photocell |
| Method | adaptation of the Standard Methods for the Examination of Water and Wastewater, 18th edition, SPADNS method |
| Battery Type | (1) 1.5V AAA |
| Auto shut-off | after ten minutes of non-use |
| Environment | 0 to 50°C (32 to 122°F) RH max 95% non-condensing |
| Dimensions | 86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5in.) |
| Weight | 64 g (2.3 oz) |
| Reagent Set | HI739-26 (30 tests) |
| Calibration Check | HI739-11 |
| Warranty | 1 year |
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