Nova-Tech 2700 Series Benchtop Meters - Manual (Page 28)

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5) For multi-point calibration repeat steps 2 & 3 with additional standards. Press
ESC to save the calibration, or press NEXT to view the calibration report.
Calibrate one point per range, up to 4.
Additional automatic conductivity calibration notes:
A maximum of one calibration point per range can be performed. If multiple
calibration points are used in the same range, the most recent one will replace
the previous one.
When the electrode is replaced, it is best to clear the calibration to the factory
default values.
Rinse or immerse the probe before calibration and between samples with clean
water (deionized water is ideal).
To protect from erroneous calibrations, the allowable tolerance is ±40% of the
factory default value.
For best results always begin with your lowest calibration standard value,
followed by the next lowest, and so on.
Low conductivity standard solutions (less than 20 µS) are unstable and are very
temperature dependent. As a result, reproducible calibration results are
challenging in lowest measurement range #1 (0.00 to 20.0 µS).
“2 Cell’ or “4 Cell’ electrode is automatically detected and
displayed on the measurement screen when connected.