3
2
Preparation Before First Use
2.1
Pull out the battery insulation slip, and take off the probe cap.
2.2
Rinse off the probe in clean water, then shake off excess water.
2.3
Perform a 2-point calibration at pH 7 and pH 4. For calibration tutorial, refer to Section
3.
2.4
If you find the probe cap is dried out, soak the probe in 3M KCL soaking solution for 5
minutes before use.
2.5
If the tester hasn’t been used for a long time (over 1 month), please soak the probe in
the 3M KCL soaking solution for at least 1 hour, then calibrate it before measurement
begins
3
pH Calibration
3.1
Power on the pen and remove the probe cap.
Always calibrate
7.00 pH first.
3.2
Rinse the probe with clean water and shake off excess water,
then submerge it in the 7.00 pH standard buffer;
shake the probe
up and down in the solution for a few seconds
and let it stand.
