9
2. Using a plastic pipette, fill the sample well with distilled or deionized water. Make
sure the prism is completely covered.
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.
3. Press the
ZERO
key. If no error messages appear, your unit is calibrated.
(For a description of ERROR MESSAGES see page 13).
Note
: The 0 screen will remain until a sample is measured or the instrument is turned off.
4. Gently absorb the ZERO water standard with a soft tissue. Use care not to scratch
the prism surface. Dry the surface completely. The instrument is ready for sample
measurement.
Note
: If instrument is turned off the calibration will not be lost.
