Hanna Instruments bl 7917 Manual De Usuario

• Slow Response/Excessive Drift: Soak the tip in Hanna Solu-

tion HI7061 for 30 minutes, rinse thoroughly in distilled water
and then follow the Cleaning Procedure above.

• For ORP Electrodes: polish the metal tip with a lightly

abrasive paper (paying attention not to scratch the surface) and
wash thoroughly with water.

Note: with industrial applications, it is always recommended to keep

at least one spare electrode handy. When anomalies are not
resolved with a simple maintenance, change the electrode
(and recalibrate the controller) to see if the problem is
alleviated.