Sper Scientific 850055 pH Meter - Advanced - Manual (Page 21)

21
MEASUREMENT PROCEDURES
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
minutes in a KCl solution. DO NOT wipe the pH probe
dry. Wiping the probe may cause static and cause
calibration and measurement instability.
2. Press POWER to turn on. ATC appears to indicate that
the automatic temperature compensation probe is
connected and working properly.
3. Immerse the probe tip (glass bulb) completely into the
sample.
4. Stir the probe gently to create a uniform sample.
5. Wait until the reading has stabilized. If selected in set-
up, “READY” illuminates to indicate a stable reading.
mV Measurement (± 499mV)
mV measurement range is from -499 mV to +499 mV with a
pH probe.