In a message dated 7/8/99 10:53:34 AM US Eastern Standard Time,
[log in to unmask] writes:
<< Can anyone tell me what the industry std/limit is for micro grammes of NaCl
per sq cm found after ionic testing? I have a value under 5 and have a set
fail limit of 20ug. This is after a 20 min test. >>
While the limit is fairly well documented in several standards, the test
duration is not. Over several years of work on ionic contamination testing,
this was a major point of frustration for me. Both the test duration and
fluid temperature should be included in the test specification. Obviously
the results are different for a 1 minute test with room temperature fluid vs.
a 20 minute test with heated fluid.
Jon Moore
Z-Tech Services