YSI 5200 - Manual (Page 118)

YSI Incorporated 116 5200 Recirculating System Monitor
rehydrated by soaking the sensor for several hours (overnight is recommended) in a solution which is 2
molar potassium chloride. If potassium chloride solution is not available, soaking the sensor in tap water
or commercial pH buffers may restore sensor function. However in some cases the sensor may have been
irreparably damaged by the dehydration and will require replacement.
CAUTION: Do not store the sensor in distilled or deionized water as the glass sensor may be damaged
by exposure to this medium.
1. Remove the pH or pH/ORP sensor from the probe module.
2. Seal the empty port with the provided port plug.
3. Place the sensor in the storage vessel (plastic boot or bottle) which was on the sensor at delivery.
The vessel should contain a solution which is 2 molar potassium chloride.
NOTE: Make certain that the vessel is sealed to prevent evaporation of the storage solution.
DO Sensor
The DO sensor should be stored dry with a membrane cap installed to protect it.
1. Rinse the DO sensor with distilled or deionized water.
2. Dry the DO sensor and install a membrane cap.
3. Insert the probe module into the calibration/storage cup.
NOTE: Ensure that an o-ring is installed in the o-ring groove on the threaded end of the probe
module body. See Figure 4-9 Calibration/Storage Cup Installation.