Clean the liquid junction of your electrodes once a day or at least once a week to prevent clogging and to maintain accuracy. Immerse the electrode in the proper cleaning solution for about 5 minutes.
HANNA® offers a wide range of cleaning solutions, for general purpose and specific applications, to eliminate all kind of dirt or deposit from the electrode, and thus ensure correct measurements.
HI98120 ORP/°C-Tester, waterproof
HI733 Checker HC ® - Ammonia, HR
Calibration Standard HI 755 Checker HC ®
HI93754A-25 Low Range COD Reagent (0 to 150 mg/L)
เครื่องวัดค่าเหล็ก รุ่น HI721 

