Sper Scientific 850038 Pure Water Meter - Manual (Page 15)

TDS CALIBRATION
F ollow these calibration steps:
Option1: Using TDS standards
1.
2.
Insert the probe into demineralized
or distilled water for about 30 minutes
in order to rinse the probe.
Select the TDS standard for calibration.
The factory default setting of the TDS
conversion factor is 0.50. If your
solution has a different TDS factor,
you can improve the calibration
accuracy by setting the TDS factor
before starting the calibration.
To change the TDS factors to the
correct value, see Appendix B
or refer to the value provided by
standard solution manufacturer.
3.
4. Turn
Pour 4 cm (deep) of the solution into
two separate & clean containers.(A&B)
on the meter. The full LCD will
flash three times. Press the
MODE key to select TDS mode.
5. Rinse the probe in one of the
containers. Gently stir the probe.
6. Dip the rinsed probe into the other
container. Tap the probe on the bottom
of container to remove air bubbles.
Let the probe stabilize to the solution
temperature.
4cm
K=0.966
B( Step 6)
4cm
K=0.9 66
A(Step 5)
14
There are
2 options for TDS calibration