Hanna Instruments HI-781-25 Marine Low Range Nitrate Reagents

Description

HI-781-25 Marine Low Range Nitrate reagents, 25 tests, for use with the HI-781 Nitrate Handheld Colorimeter Checker.

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.
• Using the 10 mL syringe, measure exactly 7 mL of sample into the large mixing vial.
• Using the 5 mL syringe, add exactly 4 mL of HI-781A-0 reagent into the large mixing vial.
• Add the content of one packet of HI-781B-0 reagent into the large mixing vial. Replace the cap and shake vigorously for 1 minute.
• Remove the plunger from the 10 mL syringe. Attach the syringe to the filter holder assembly using the threaded connection.
• Remove the cap from the mixing vial. Hold the syringe and filter holder assembly over a cuvette. Carefully pour the contents of the mixing vial into the back of the syringe.
• Very slowly push the plunger into the 10mL syringe until the 10mL cuvette has been filled up to the 10 mL mark and replace the cap.