Aging
4210W / 4211
8
ba76138d05
06/2018
4
Aging
ORP electrodes are consumables. Every ORP electrode undergoes a natural
aging process. Extreme operating conditions can considerably shorten the
lifetime of the electrode. These are:
Strong acids or lyes, hydrofluoric acid, organic solvents, oils, fats, bro-
mides, sulfides, iodides, proteins
High temperatures
High changes in pH and temperature.
The warranty does not cover failure caused by measuring conditions and
mechanical damage.
5
Maintenance and cleaning
During operation, a small amount of reference electrolyte leaks through the
junction from the electrode into the test sample. If the level of reference elec-
trolyte becomes too low with time, refill it through the refilling opening.
Refilling the refer-
ence electrolyte
Refilling is very easy using a dropping bottle. Proceed as follows:
Cut off the tip of the dropping bottle at a right angle until the opening in the
tip can be seen
Open the refilling opening of the electrode
Press the tip of the dropping bottle into the refilling opening while turning
it slightly
Pump several small quantities of the reference electrolyte into the stem
using the dropper bottle
Pull the dropping bottle out of the refilling opening while turning it slightly
as necessary.
Cleaning
Remove water-soluble contamination by rinsing with deionized water.
