OHAUS ST310 Instrucciones Generales página 5

EN-2
OHAUS offer different pH electrode for
different application. Make sure you have
chosen the best fit pH electrode for your
samples; and do calibration first for the
electrode.
3-in-1 electrodes(ST310 and ST320)

have the temperature probe in it.
Gel electrode(ST320) doesn't need to

refill the reference electrolyte.
2-in-1 pH electrodes(ST210, ST230,

STPURE) need to work with
STTEMP30 for 0.01 pH accuracy.
Before using electrode in calibration or
measurement, we should note:
1. When unpacking, check the electrode for
any mechanical damage to the membrane,
diaphragm or body.
2. Screw off watering cap first, then the lid,
rinse electrode with pure water. Wipe
electrode with a tissue. Do not rub the glass
membrane, or the response time might
increase.
3. Eliminate any air bubbles inside the
membrane. Make the electrode inside
pressure equilibrium with the atmosphere by
opening the electrode refilling aperture when
measurement.
pH Electrodes