wtw Stirrox G, Operating Manual, Page: 12 / 22

Maintenance, cleaning, replacement StirrOx G
12 ba25310d07 08/2018
5.4 Cleaning the electrodes
CAUTION
Before starting to work with the sensor, please note the G
ENERAL
MAINTENANCE INSTRUCTIONS
on page 8.
General
information
Cleaning is only required in cases of slopes too low or too high (sensor
cannot be calibrated) that cannot be resolved by changing the membrane
head and electrolyte solution.
Cleaning the electrodes
Pull off the stirring paddle and
screw off the membrane
head.
Caution: Electrolyte solution!
For disposal of the membrane
head and electrolyte solution,
see section 5.6.
Rinse the sensor head with
deionized water. Using the rough side of the
wet SF 300 polishing strip,
polish off any contamination
from the gold working
electrode using light pressure.
Caution: Do not use any
conventional sandpaper or
glass-fiber brushes.
Rinse the sensor head with
deionized water. Wipe the counter electrode
with a lint-free paper towel
and carefully remove any
loose white deposits. Immerse the sensor head
including the counter
electrode in RL/G cleaning
solution.
Allow to react for 1 to 3
minutes.
SF 300
RL/G