SECTION II
2-3.
THE FUNCTION AND OPERATION OF THE BECKMAN pH METER.
pH.
The Beckman pH meter (figure 2) is a laboratory instrument designed for rapid and accurate pH
and millivolt measurement of liquids, pastes, and semisolids. The large meter face contains two scales.
The pH scale is calibrated in 0.1 pH units with a range of 0 to 14. Temperature corrections may be
made for 0 Centigrade to 60 Centigrade with plus or minus 1 Centigrade accuracy, and 60
Centigrade to 100 Centigrade with plus or minus 2 accuracy. A Beckman thermocompensator probe
#39069 may be used for automatic temperature compensation. Memory variations must be recorded to
compensate for amplifier drift. A class electrode #41263 and reference electrode, are supplied with the
pH meter which provides satisfactory readings for a wide variety of analyses.
Figure 2
Overall View of the Beckman SS3 pH Meter.
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