Description

Elcometer SCM400 Salt Contamination Meter

Soluble salts on a surface are absorbed into a
special filter paper soaked with distilled water.
The Elcometer 130 measures the conductivity
of wet paper, calculates the salt level and
displays it in ugcm-2.
• Suitable for a wide range of shapes,
orientations, surfaces and finishes
• Quick and simple to use
• Battery operated and portable
• Confirms adequate cleaning of
surfaces before coating, aiding the
prevention of premature coating failure
• Shows salt build-up on vulnerable
surfaces, which can be treated to
increase the lifetime of a coating
• Test papers can be re-moistened and
a similar test result can be achieved –
ideal for proof and ISO requirements
• Accurate
• Repeatable
• Reproducible

Surface Cleanliness
Surface contamination from
salts such as chlorides,
sulphates and nitrates have
been shown to lead to
blistering of organic coatings,
particularly in immersion
conditions.
It is not sufficient to measure
the cleanliness of the
substrate. In a multi-layer
coating process, it is
necessary to monitor and
record the cleanliness of each
layer prior to applying the next
coating. When using amine
cured epoxy coatings, for
example, in low ambient
temperatures or in high
humidity, a surface oiliness or
exudate may cause
inter-coating adhesion failure.