10
MA872 Digital Fructose Refractometer
6. CALIBRATION PROCEDURE
Calibration should be performed daily, before measurements are
made, when the battery has been replaced, or between a long
series of measurements.
1. Press the
ON/OFF
key, then release. Two instrument test
screens will be displayed briefly; an “all segment” screen
followed by the percentage of remaining battery life. When
LCD displays dashes, the instrument is ready.
2. Using plastic pipettes, fill the sample well with distilled or
deionized water.
Note:
If the ZERO sample is subject to intense light such as
sunlight or another strong source, cover the sample well with
your hand or other shade during the calibration.
