gaskatel Mini-HydroFlex Bedienungsanleitung Seite 17

Mark month and year on the label. Attach the sticker to the electrode
head.
Remove the protective cap from the electrode carefully.
Place Mini-HydroFlex in water for 24 hours.
Please do not remove the labelling with the serial number and the sticker with the
activation date.
2. Storage of Hydrogen Reference Electrode Mini-HydroFlex
After the measurements, rinse the electrode thoroughly with water. Place the
hydrogen electrode in a liquid (such as measuring solution, 1 mol / l hydrochloric acid,
1 mol / l sodium hydroxide solution, water) to keep it functional.
As soon as the running time of 12 months is reached, the hydrogen cell
must be replaced immediately (see 4. Maintenance).
Otherwise, a negative pressure will build up in the capillary so that
liquid can get into the capillary.
EN - Page 5