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6. pH Calibration (with custom buffers)

Buffer Group pH Values

CUSTOM Any 2 - 5 values, ≥ 1.0 pH unit apart

1) Turn meter on, press MODE if needed for pH measurement mode.

2) Rin

se the pH and ATC electrodes then submerse in your custom pH buffer—

any pH value can be used.

3) Press

CAL (enter password if required) to enter calibration mode. If desired,

select CLR-C to clear the previous calibration. The lower pH value

corresponds to the factory default setting for reference. When stable, use the

up/down arrows to adjust the upper pH value to your custom pH buffer value.

For best results, enter the value of the buffer that corresponds

to the measured temperature. For example, pH 10 buffer is

actually 10.06 at 20°C, so adjust to 10.06 instead of 10.00 if

the temperature is 20°C.

4) Press

ENTER to accept the calibration value. When successful, the accepted

value will be visible inside of a beaker icon.

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EUTECH INSTRUMENTS 2700 Bedienerhandbuch Seite 18