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5 Operation
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The measured value flashes on the display. The symbol at the
bottom left means that the 949 pH Meter is calibrated in the neutral
range.
The 949 pH Meter is ready to detect the 2nd calibration point.
Next to the 2ND POINT PH message, all buffers that the 949 pH Meter
can automatically detect will appear in turn.
NOTE
The CHANGE BUFFER message prompts the user to change the buffer
solution.
Calibrating the 2nd point
1
Remove the electrode from the buffer solution.
2
Rinse the electrode with distilled water.
3
Immerse the electrode in the pH 4.00 buffer solution.
The WAIT FOR STABILITY message appears on the display and the
symbol flashes.
4
As soon as buffer 4.00 is detected and the symbol appears, press
the button.
The measured value will appear on the display and briefly after that,
the slope.
The symbol will appear next to the symbol. The symbol
means that the 949 pH Meter is calibrated in the acidic range.
The 949 pH Meter is ready to detect the 3rd calibration point.
All of the buffers that the 949 pH Meter can detect automatically will
appear next to the 3RD POINT PH message.
NOTE
The CHANGE BUFFER message prompts the user to change the buffer
solution.
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