Accumet XL 20 User Manual page 133

Ion Operation: Direct Reading Methods
Measuring Ion Concentration in the Direct Reading with Standards mode
With Auto Read on
1. Add Ionic strength adjuster to the sample.
2. Immerse the ion selective electrode in the stirring sample.
3. Touch Measure to begin measuring your sample. The meter will accept the reading and
display STABLE* when the measurement meets the selected stability criteria. The
measure screen will fix onto this measurement and will not deviate until Meas is touched.
Repeat steps 1-3 with additional samples.
* Please note that STABLE will only appear if you have completed a successful two point calibration.
With Auto Read off
1. Add Ionic strength adjuster to the sample.
2. Immerse the ion selective electrode into the stirring sample. The meter will continually
monitor the ion concentration value. When the meter recognizes the reading as stable,
STABLE is displayed on the measure screen. With the Auto Read function deactivated,
the display on the measure screen will indicate any deviation in the concentration.
3. Repeat steps 1-2 with additional samples.
XL25, 50 and 60 meters
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