Specifications HI707 (LR) HI708 (HR) Range 0 to 600 ppb NO –º-N 0 to 150 ppm NOºResolution 1 ppb 1 ppm Accuracy ±20 ppb ±5% of reading @ 25 °C (77 °F) ±3 ppm ±5% of reading @ 25 °C (77 °F) Light Source Light Emitting Diode @ 470 nm Light Emitting Diode @ 575 nm Light Detector Silicon photocell Method Adaptation of the EPA Diazotization Method 354.1. The reaction between nitrite and the reagent causes a pink tint in the sample. Adaptation of the Ferrous Sulfate Method. The reaction between nitrite and the reagent causes a greenish-brown tint in the sample. Environment 0 to 50 °C (32 to 122 °F); max. 95% RH non-condensing Battery Type 1.5V AAA Alkaline Auto-off After 20 minutes of non-use and 4 minutes after reading After 20 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 HI707 Checker®HC is supplied with sample cuvette and cap (2 pcs.), Nitrite Low Range reagent starter kit (reagents for 6 tests), 1.5V AAA Alkaline battery (1 pc.), and instruction manual. HI708 Checker®HC is supplied with sample cuvette and cap (2 pcs.), Nitrite High Range reagent starter kit (reagents for 6 tests), 1.5V AAA Alkaline battery (1 pc.), instruction manual. Reagent Set HI707-25 Reagents for 25 Nitrite Low Range tests HI708-25 Reagents for 25 Nitrite High Range tests Calibration Set HI707-11 Nitrite Low Range certified standard kit HI708-11 Nitrite High Range certified standard kit HI707 Ð HI708 Nitrite 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: · Aquaculture · Aquariums · Education · Environmental · Water quality · Wastewater The HI707 and HI708 Checker®HC Handheld Colorimeters bridge the gap between simple chemical test kits and professional instrumentation. Chemical test kits are not very accurate, while professional instrumentation can cost hundreds of dollars and can be time-consuming to calibrate and maintain. Hanna Checker HC’s are accurate, aordable, and easy to use. To begin measurements, ¡rst zero the instrument with your water sample. Next, add the reagent. Last, place the vial into the Checker HC, press and hold the button for 3 seconds to start reaction timer. The reading will be taken automatically and the results displayed. It’s that easy. The contoured style of the Checker HC ¡ts in your palm and pocket perfectly and the large LCD is easy to read. The auto shuto feature assures the battery life will not be drained if you forget to turn it o. See page10.166 for Checker HC accessories www.hannainst.com | 10 10.159 Photometers Checker®HC
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