Elcometer 138/2 User Manual page 5

3 TEST PROCEDURE (continued)
3.3 AFTER TEST
1 Record the temperature of the solution.
2 Remove the patch from the surface and clean the surface. If
required, any adhesive residue from the patch left on the test
surface can be removed by wiping with a cloth moistened with a
suitable solvent. Ensure that the solvent will not damage the
surface before use.
3 Rinse all components of the test kit, other than the patch, in fresh,
pure water. The components can then be used again.
3.4 TESTING FOR CHLORIDE
1 Remove a titrator from the plastic bottle
marked 'Chloride' and replace the cap on
the bottle immediately.
The test strips included in the kit have a

shelf life determined by the manufacturer.
Before using a test strip, always check that
the expiry date has not been exceeded.
The expiry date is marked on the test strip
container. Further information concerning
the use of test strips can be found in the
manufacturers' instructions included in the
test strip container.
2 Insert the lower end of the titrator into the
solution. Do not allow the solution to
reach the yellow band at the top of the
titrator. Fluid will rise up the wick inside
the titrator by capillary action.
3 Allow the solution to completely saturate
the titrator wick; complete saturation is
indicated by the yellow band at the top of
the titrator changing to a dark blue colour.
4 Note the position on the numbered scale of the tip of the white
column which has become visible; this represents the Quantab
unit value.
5 Refer to the table on the bottle to convert the Quantab unit value
to chloride concentration; mg/L or ppm.
Note: The solution contains salt in a 3ml sample taken from a 12.5cm area.
Estimated salt / area as Sodium Chloride (according to ISO 8502-5):
2
µg/cm = 0.4 x concentration in ppm; mg/m = 4.0 x concentration in ppm
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