Setting the pH7 standard solution mode (sect. 3.4.3 of manual)
The meter allows for calibration at a pH of either 6.8 (NIST), 7.0 (USA) or a customer-
specified value. Spectrum ships the meter with pH 7.0 solution. To confirm the meter is in
USA mode:
1. With the meter in measurement mode, press the SET key to enter the pH Buffer selection
mode.
2. Pressing the ENTER key will toggle you between the 3 modes. Select USA mode.
3. Press the MEAS
key to return to
measurement
mode.
D-54 pH/EC Meter (item 2172)
Quick Start Guide
pH
Probe preparation (sect. 6.1. of manual)
The pH probe should be connected to channel 1 of the D-54 Reader (see fig. 1). The probe
should always have a sufficient quantity of internal filling solution (item # N360647
). This
solution should be changed every three to six months to maintain probe performance. The old
solution should be removed with a syringe and new solution added until it is completely filled,
leaving few or no bubbles (fig. 2).
Figure 1
Figure 2