HANNA HI 761

The HI 761 Checker® HC is a simple, accurate, and cost effective way to measure ultra-low ranges of total chlorine. Designed as a more accurate alternative to chemical test kits, the HI 761 provides quick, accurate results in four easy steps. 1.) Step One - Add a sample to the included cuvette( s) 2.) Step Two - Insert sample into the Checker and zero it out 3.) Step Three - Remove sample and add reagent 4.) Step Four – Reinsert sample and click the button to measure your results or… - Press and hold the button for 3 seconds for a time reaction reading The HI 761 uses an adaptation of the USEPA method 330.5. The reaction between the chlorine and DPD reagent causes a pink tint in the sample. FEATURES/ BENEFITS: * Small palm-sized design * Accurate from ± 5ppb ± 5% of reading * Dedicated to a single parameter * Uses a single AAA battery * Auto Power Off after 10 minutes in inactivity * Built-in timer for timed reaction readings PRIMARY APPLICATIONS: * Water Quality * Education * Water Purification * Environmental Order Information: The HI 761 Checker® HC is supplied with 2 cuvettes and caps, reagent starter kit ( 6 packets for total chlorine ultra-low range) , 1 x 1.5V AAA battery, and an instruction manual. Range 0 to 500 ppb Resolution 1 ppb Accuracy ( @ 25° C/ 77° F) ± 5ppb ± 5% of reading Measurement Method Colorimetric Light Source Photodiode @ 525 nm Light Detector Silicon photocell Method Adaptation of the USEPA method 330.5. The reaction between the chlorine and DPD reagent causes a pink tint in the sample. Power Supply Battery - 1 x 1.5V AAA Power Auto Off After 10 min. of inactivity Environment 0 to 50° C ( 32 to 122° F) ; RH max 95% non-condensing Dimensions 81.5 x 61 x 37.5 mm ( 3.2 x 2.4 x 1.5” ) Weight 64 g ( 2.25 oz.)