HI-782-25 Marine High Range Nitrate Reagents

Measurement Procedure Press the ON/OFF button to turn the checker on. All segments will be displayed for a few seconds, followed by “Add”, “C.1” with “Press” blinking. Fill the cuvette with 10 mL of unreacted sample and replace the cap. Insert the cuvette into the checker and close the cap. Press the ON/OFF button. When the display shows “Add”, “C.2” with “Press” blinking, the checker is zeroed. Remove the cuvette, unscrew the cap and add the content of one packet of  HI-782-0 Marine Nitrate High Range reagent. Replace the cap and shake vigorously for 2 minutes. Insert the cuvette into the checker and close the cap. Press and hold the ON/OFF button. The display will show the countdown prior to the measurement. Alternatively, wait 7 minutes and press the button. When the timer ends, the checker will perform the reading. The instrument displays the nitrate concentration in ppm. The checker automatically turns off 10 minutes after readings.