Thermo Fisher Scientific CyberScan DO 600 - Manual (Page 52)

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pH Settings Page 2 – Calibration Due Alarm & pH Resolution
Figure 16: pH Settings Page 2 – Cal-due Alarm & pH Resolution
Parameter Description Factory Default
pH Calibration Due
Specify number of days for the pH calibration
alarm. The meter shows CAL DUE indicator after
calibration due days are passed from the last
calibration date.
Available range: 0 to 30
5 Days
pH Resolution
Sets the resolution for pH measurement
Available range: 0.1, 0.01, 0.001
0.00

Press (Up) or (Down) arrow key to change pH measurement & calibration
related settings of the meter.
2. pH Calibration
2.1 About pH Calibration
When you re-calibrate your meter, previous pH calibration points are replaced
on a point by point basis. For example, if you previously calibrated your meter
at pH 4.01, 7.00, and 10.01, and you have now re-calibrated at pH 7.00, the
meter retains the old calibration data at pH 4.01 and pH 10.01. The meter
shows previously calibrated points in the display when the meter is in pH
measurement mode. To completely re-calibrate the meter, or when you use a
replacement probe, it is best to clear the previous calibration and re-calibrate
the meter at all points.
The meter supports four internationally recognized standard buffer groups:
USA, NIST, DIN & PWB. The default buffer group is USA.
The meter is capable of calibrating up to 6 points, depending on the standard
buffer selected. When completely re-calibrating the meter, the first point of
calibration should be one of the following, depending on your choice of standard
buffer group.