Sper Scientific 850037 Large Display Conductivity Pen - Manual (Page 40)

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5. Set the temperature coefficient to the
correct value. The pen defaults to 2.1%
per °C, which will typically provide
good results. See page 27 to reset the
temperature coefficient.
6. Select the reference temperature. The
pen defaults to 25°C. To more than
2 seconds to select the 19.99 mS
range. See page 26 for instructions on
manually selecting the range. normalize
to 20°C instead, see page 26.
7. Rinse the probe tip with de-ionized or
distilled water before use to remove
any impurities adhering to the probe.
If the probe tip is dehydrated, soak it
for 30 minutes to prevent contaminants
from slowing down the measurement
and accuracy.
8. Immerse the probe tip completely into
the sample. Ensure that there are no
air bubbles trapped in the probe slot.
Gently stir the probe to remove air
bubbles, ensuring that the probe tip is
submerged while stirring.