DeFelsko PosiTector SST User Manual

3
How To Measure
Test Preparation:
Use deionized (DI) water to thoroughly clean the PosiTector SST test cell, test cup, syringe
and PosiPatch (if used in test).
All test materials should be handled in a manner that minimizes the potential for contamination.
The PosiTector SST operator may choose to wear nitrile or other non-contaminating gloves
when performing the test.
Remove the protective rubber cap from the probe. Power-up the Gage by pressing the center
navigation button. In the default Bresle Mode, the Gage guides you through three simple
steps [1], [2] and [3].
Step [1]: Obtain Background (Blank) Conductivity Measurement (
γ
1
)
NOTE: The Gage automatically displays the previous background measurement, if any. This
measurement can be reused and steps (c) to (e) can be skipped by pressing the (-) button.
a) Pour at least 4ml (milliliters) of deionized (DI) water into the supplied cup (to prevent
contamination of the water source).
b) Fill the syringe completely with DI water from the cup (slightly more than 3ml).
c) Completely fill the PosiTector SST probe’s test cell with water from the syringe
(approximately 1ml).
d) Wait until the measurement stabilizes (up to 5 seconds), then press the (+) button to save a
new background conductivity measurement (γ
1
) and the water temperature (T
1
).
e) Use the syringe to draw all of the water from the test cell. Shake any remaining water out of
the test cell.
f) With the syringe pointing up, expel the air and excess solution from the syringe until there is
3ml of DI water remaining.

DeFelsko PosiTector SST Specifications

General

Brand	DeFelsko
Model	PosiTector SST
Category	Measuring Instruments
Language	English