Sper Scientific 860031 pH - mV Bench-Top Meter - Manual (Page 39)

39
MEASUREMENT PROCEDURES
IMPORTANT: The temperature of the measured liquid
must be stable. pH and conductivity probes CANNOT be
placed in the same container while taking measurements.
Hold Function
This function allows you to freeze current readings on the
display in Normal Mode.
1. Press POWER to turn the meter on.
2. Press HLD while in Normal Mode. “HOLD” appears on
the display.
3. To release the Hold function, press HLD again.
pH Measurement
pH measurement range is 0 ~ 14 pH.
This meter is designed to take readings with automatic or
manual temperature compensation. Automatic temperature
compensation only occurs when a temperature sensor is
plugged into the meter. For manual temperature
compensation, the default setting is 25°C. It is also
possible to manually adjust the temperature to match your
working conditions (as measured by a separate
thermometer). To take measurements:
1. Remove the pH probe soaker bottle by rotating the
bottle and cap and slide the bottle and cap off the probe.
Rinse the probe tip with de-ionized or distilled water
before use. If the probe tip is dehydrated, soak it for 30