22
MW160
Bench Meter
8.3. MEASUREMENT
Make sure the instrument has been calibrated before taking pH measurements.
1. Remove the probe protective cap and place the tip approximately 4 cm (1 ½”) into the
sample. It is recommended to wait for the sample and the pH probe to reach the same
temperature.
2. If necessary, press RANGE until the display changes to pH measurement range. Allow
the reading to stabilize (blinking WAIT tag disappears).
The LCD will display:
y
measurement and temperature readings
y
temperature compensation mode (MTC or ATC)
y
buffers used (if option enabled in Setup)
For best results is recommended to:
y
Calibrate the probe before use and recalibrate periodically.
y
Keep the electrode hydrated.
y
Rinse the probe with the sample before use.
y
Soak in
MA9015
Storage solution for at least 1 hour before measurement.
MTC mode
If Manual Temperature Compensation (MTC) is desired, the temperature probe must be
disconnected from the instrument.
The LCD displays the default temperature of 25 °C or the last temperature reading with the
blinking MTC and °C (or °F) tags.
The temperature can be adjusted using the
keys (from –20.0 °C to 120.0 °C).