VWR 662-2380, Instruction Manual

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10.2. Entering the buffers’ values into the meter’s memory
If the calibration with use of buffers has been chosen and the pH values set by
the manufacturer are used, there is no need to change them. However, it
should be verified whether the values correspond to those of applied buffers.
Different buffers’ values should be entered to the meter’s memory before
calibration.
To enter:
- according to the point 9.2 choose the number of electrode ( E1 , E2 or E3 ),
for which the points of calibration are to be changed;
-
enter the calibration mode: select the pH measurement on the
measurement screen, press and hold the
button until the
background turns red (Pic. 6A). The previous characteristic is erased;
- press the
button, the pH measurement parameters screen will
appear (Pic. 6B);
-
press the
SOLUTION
window and choose BUFFER ;
-
press the
button, the screen with calibration points will appear (Pic.
6C);
-
select the window with a point to be changed, a numerical keyboard will
appear to enter the value and confirm with the
button.
-
return to the measurement screen in calibration mode by double press of
the
button and calibrate the electrode in the chosen points or exit
the calibration mode by pressing the
button again;
User‘s manual for PH-2500L pH meter v1.0x