Sensor Storage - YSI PRO20 Mode D'emploi

At the time the membrane cap is changed, YSI recommends that you rinse the
anode (silver shaft of the sensor) with purified water and wipe with a clean paper
towel. If white deposits are evident on the anode after cleaning, YSI recommends
that you remove this material by sanding the anode with the sandpaper disk
included in the membrane kit. Follow the "Mechanical Cleaning" instructions
under the Polarographic Silver Anode section.
IMPORTANT
: Be sure to: (1) Use only the fine sanding discs
provided and (2) Sand as mentioned in the above procedures. Not
adhering to either of these instructions can damage the electrodes.
WARNING
: DO NOT PERFORM THE POLAROGRAPHIC
CHEMICAL CLEANING ON A GALVANIC SENSOR.
If this procedure is unsuccessful, as indicated by improper sensor performance,
contact YSI Technical Support or the Authorized Dealer where you purchased the
instrument.

SENSOR STORAGE

SHORT TERM STORAGE
The instrument is supplied with a grey calibration/storage sleeve that slides over
the probe guard. The sleeve is used for short-term storage (less than 30 days). Be
sure to keep a small amount of moisture (tap water) on the sponge in the sleeve
during storage. This is simply done to maintain a 100% water saturated air
environment which is ideal for short-term sensor storage. The sensors should not
be submersed in water. The intent is to create a humid air storage environment.
LONG TERM STORAGE
Dissolved oxygen sensors (Polarographic and Galvanic) should always be stored
long term in a dry state. When storing for more then 30 days, remove the
membrane cap and thoroughly rinse the sensor. Once the sensor has been rinsed
either blow it dry with compressed air or allow to air dry completely. Use a clean,
dry new membrane cap to screw over the sensor to keep it dry and to protect the
anode and cathode.
After storing the sensor for a long period of time it is necessary to "condition" the
sensor by putting a new membrane with electrolyte solution on the sensor.
Long Term Storage Temperature: -5 to 70°C (23 to 158°F)
32