27
Calibration
D.2.4 CALVIEW
CALVIEW
displays the pipetting stroke (number of motor steps) used to
reach the calibration point. This value allows you to confirm the calibration
during pipetting and after calibration. To activate CALVIEW, enter the CAL
mode using the Special Function key. When the calibration point is displayed,
press the [Fill] key. The number of steps is displayed. Press any key to
exit
CALVIEW.
D.2.5 CALRESET
CALRESET
allows you to return to a default calibration step. To reset the
calibration, enter the CAL mode using the Special Function key. When the
calibration point is displayed, press the [Purge] key. The display flashes
“FACT,” “CAL,” then “SET” and the pipette resets to the default step. This
default setting is an average value for all pipettes of its class.
This value
may differ from the factory-optimized calibration step documented on
the “Pipette Calibration Report” certificate enclosed in this pipette’s
documentation.
D.3 Recommendations for Accurate Pipetting
Matrix Electronic pipettes are factory calibrated to deliver accurate volumes
with distilled water at 21 °C and 50% humidity. By using the calibration
procedures described above, you can pipette liquids of different specific
gravity with a high degree of accuracy and reproducibility. For optimal
pipetting results, refer to the following recommendations:
• Pipette at a constant temperature.
Allow liquids and equipment
to equilibrate to ambient temperature. Volume aspiration with air
displacement pipettes varies with air pressure, relative humidity and the
liquids vapor pressure, all of which are temperature dependent.
• Attach tips with slow, even pressure.
When applying tips, avoid
‘banging’ or applying excessive force to the tip(s), as this stretches the tip
seal and will affect volume. Use Matrix tips, which have been specifically
designed to match the tip fittings on Matrix pipettes.
