18
CONDUCTIVITY CALIBRATION
It is recommended that HI 933300 and
HI 933301 are calibrated frequently for great-
est accuracy, especially when used often or
in samples with widely differing conductivity
values. For best results choose conductivity
solutions that are closest in value to the
sample to be measured.
For accurate calibra-
tion, use two bea-
kers for each solu-
tion: the first one for
rinsing the probe,
the second one for
calibration. In this way cross contamination
is minimized.
If possible, to minimize any EMC interfer-
ences, use plastic beakers for the solutions.
These meters can also be calibrated in air at
0.0 µS/cm.
For example if your measurements are in the
2 to 20 mS/cm range you should use HI 7030
or HI 8030 (12880 µS/cm= 12.88 mS/cm) con-
ductivity calibration solution.
A complete list of all the Hanna Instruments
calibration solution is given in the Accesso-
ries section (see page 50).
Press the RANGE key to se-
lect the conductivity measure-
ment mode.
Ensure that the probe is con-
nected to the meter securely.
Insert the probe into the PVC sleeve with the
holes towards the top (the end nearest to the
cable) of the probe.
RINSE CALIBRATION
RANGE