HI-739 Håndholdt kolorimeter til højt fluorområde, Checker HC
HI-739 Håndholdt kolorimeter til højt fluorområde, Checker HC
På lager
HI-739 lommetesteren er en enkel og præcis måde at måle høje fluoridniveauer i ferskvand. Checker®HC leveres med reagenser til 15 tests. Brug koden HI-739-26 (30 tests) til fremtidige køb.
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Beskrivelse
Beskrivelse
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.
Specifikationer
Specifikationer
| Rækkevidde | 0,0 til 20,0 ppm | |
| Opløsning | 0,1 ppm | |
| Nøjagtighed ved 25°C | ±0,5 ppm ± 5% af aflæsningen | |
| Lyskilde | LED @ 575 nm | |
| Lysdetektor | silicium fotocelle | |
| Miljø | 0 til 50°C (32 til 122°F); RF maks. 95% ikke-kondenserende | |
| Batteritype | (1) 1,5V AAA | |
| Automatisk slukning | efter to minutters inaktivitet og ti sekunder efter aflæsning | |
| Dimensioner | 81,5 x 61 x 37,5 mm (3,2 x 2,4 x 1,5 tommer) | |
| Vægt | 64 g (2,25 oz.) | |
| Metode | tilpasning af SPADNS-metoden |
Sikkerhedsdatablad
Sikkerhedsdatablad
Du kan finde sikkerhedsdatablade for vores produkter her
Manualer
Manualer
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