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

3 TEST PROCEDURE ISO
3.1 BEFORE YOU START
1 If using the Elcometer 138 Bresle Salt Meter, press the MEAS button to set
the measurement mode to ISO.
2 Calibrate the Elcometer 138 Meter, see Appendix A Section A5 on
page en-19.
3 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
4
water in the syringe. Take care not to re-insert the air during steps 6 and 7.
www.elcometer.com
: 8502-6 / ISO 8502-9
R
en-4