See page10.166 for Checker HC accessories Specifications HI729 (LR) HI739 (HR) Range 0.00 to 2.00 ppm (as FÕ) 0.0 to 20.0 ppm (as FÕ) Resolution 0.01 ppm 0.1 ppm Accuracy 0.10 ppm ±5% of reading @ 25 °C (77 °F) 0.5 ppm ±5% of reading @25 °C (77 °F) Light Source Light Emitting Diode @ 575 nm Light Detector Silicon photocell Method Adaptation of the Standard Methods for the Examination of Water and Wastewater, 18th Edition, SPADNS Method Environment 0 to 50 °C (32 to 122 °F); max. 95% RH non-condensing Battery Type 1.5V AAA Alkaline Auto-off After 10 minutes of non-use and 2 minutes after reading Dimensions 86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5”) Weight 64 g (2.3 oz) Ordering Information HI729 Checker®HC is supplied with sample cuvette and cap (2 pcs.), Fluoride Low Range reagent starter kit (reagents for 6 tests), 1 mL syringe with tip, 1.5V AAA alkaline battery (1 pc.), and instruction manual. HI739 Checker®HC is supplied with sample cuvette and cap (2 pcs.), Fluoride High Range reagent starter kit (reagents for 15 tests, 1 mL syringe with tip, Plastic pipette (1 pc.), 1.5V AAA alkaline battery (1 pc.), and instruction manual. Reagent Set HI729-26 Reagents for 20 Fluoride Low Range tests HI739-26 Reagents for 30 Fluoride High Range tests Calibration Set HI729-11 Fluoride Low Range certified standard kit HI739-11 Fluoride High Range certified standard kit HI729 Ð HI739 Fluoride Low Range and High Range Handheld Colorimeters • Easier to use and more accurate than chemical test kits • Dedicated to a single parameter • Small size, big convenience • Ideal for water quality Fluoride is one of the very few chemicals that have been shown to cause signi¡cant eects in people through drinking water. Fluoride has bene¡cial eects on teeth at low concentrations in drinking water, but excessive exposure to uoride in drinking water, or in combination with exposure to uoride from other sources, can give rise to a number of adverse eects. A 1994 World Health Organization expert committee suggested a level of uoride from 0.5 to 1.0 ppm, depending on climate. Bottled water typically has unknown uoride levels, and some domestic water ¡lters remove some or all uoride. | www.hannainst.com 10 10.150 Photometers Checker®HC
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