Manual
8
5) Use the two fingers to press the " REC Button " (3-4) and " HOLD Button " (3-3) at the same time. Until
Display will show the following screen then release the both fingers.
6) Press the "
▲ Button " (3-5) or " ▼ Button "(3-6) once in sequence to select the following screen.
a
For pH 4.00 calibration
b
For pH 7.00 calibration
c
For pH 10.00 calibration
d
Clear the existing calibration data
* After the above a, b, c screen is selected, then cooperate the relative standard solution, for example the
b screen should cooperate the pH 7.00 standard solution.
a screen should cooperate the pH 4.00 standard solution.
Pressing the " Enter Button " (3-4) will save the calibration data and finish the calibration procedures.
* If you select the d screen, press the " Enter Button " (3-4) will clear existing calibration data.
7) The complete procedures should execute the two calibration points:
pH7 calibration
pH4 calibration ( or pH10 calibration )
* The calibration procedures should execute start from pH7 calibration then follow pH4 ( or pH10 )
calibration.
* Rinse the electrode with distilled water again when make each point calibration ( pH7, pH4 or pH10 ).
* Repeat above two points procedures two times at least.