Test Procedure: Iso 8502-6 / Iso 8502-9 - Elcometer 138 User Manual

3 TEST PROCEDURE: ISO 8502-6 / ISO 8502-9

3.1 BEFORE YOU START
1 Calibrate the conductivity meter, see Section .5 on page
2 As the test is extremely sensitive, clean latex or nitrile gloves
should be worn during the extraction of soluble salts to prevent
contamination of the surface.
3.2 TEST PROCEDURE
1 Remove the printed protective backing
and foam centre from the Bresle
patch.
2 Apply the patch to the surface
pressing firmly around the perimeter of
the patch to ensure a complete seal. If
using the Elcometer 135C Bresle Test
Patch, remove the clear protective film
cover using the orange tab.
3 Fill a syringe with 3ml of pure water.
4 Insert the syringe into the patch
through the spongy foam perimeter at
an angle of approximately 30° to the
test surface so that it passes through
the foam into the compartment formed
by the elastomer film and the test
surface. If the patch is positioned in a
difficult position bend the needle as
required.
5 Inject the pure water into the patch.
Do not remove the needle.
If necessary, any air can be evacuated

into the syringe and allowed to stay above
the water in the syringe. Take care not to
re-insert the air during steps 6 and 7.
6 During a suitable period of time ,
without removing the needle, suck and
re-inject the solution at least four
c
times .
b
On un-pitted blast-cleaned areas, a period of 10 minutes has been found to be satisfactory, though this
time should be agreed by the interested parties.
c
During steps 6 and 7, it is essential that no solution is lost. If any solution is lost, the test shall be rejected.
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5
b
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