Measuring Soluble Salts - Elcometer 130 Guia Del Usuario

4 MEASURING SOLUBLE SALTS

1 Press and hold the ON/OFF button to switch the gauge on.
2 Set the filter paper size as required, see section 3.4.
3 Put on a pair of clean disposable gloves.
4 Fill a syringe with the precise amount of high purity water
required, dependent on the filter paper size:
Full: 1.6ml; Half: 0.8ml; Quarter: 0.4ml.
5 Using tweezers, remove a filter paper from the pack.
4
For half size paper: fold the standard paper in half and cut into two along
the fold line.
4
For quarter size paper: fold the standard paper into quarters and cut
into quadrants along the fold lines.
6 Eject the pure water from the syringe evenly onto the filter paper,
taking care to retain all the water on the paper.
7 Place wetted paper on to the area under test, pressing firmly into
any contours or irregularities to remove any entrapped air and
start the 2 minute timer.
4
The Elcometer 130 has an optional timer, see section 3.5.
4
When testing on hot substrates, a clean plastic bag can be placed over
the paper to reduce evaporation.
4
Additional samples can be prepared whilst waiting for the 2 minute test
time to elapse.
Filter paper should be discarded and the sample re-tested if the paper
is left on the substrate for more than 3 minutes.
#
Non-pure water, with a maximum conductivity of 237.5µS/cm (equivalent to 2µg/cm or 119 ppm) can be offset using the Calibration Offset
feature (Model T), see section 3.6
www.elcometer.com
#
½: 0.8ml
2 mins
Sample 2...
2
R
1: 1.6ml
¼: 0.4ml
Sample 1
8