As a follow up -  ASTM B298,  the coating continuity tests for Ag plating (polysulfide and
HCl tests), states that  anything less than 40 micro inches Ag will not pass.

As for the 85/85 test it is possible to create liquid water on a surface during this test but
it is much easier to create a liquid water film at lower temperatures. This low temperature
film occurs prior to visible condensation (as low as 60% RH) and depending on the types and
amounts of contaminants present can cause serious damage in a short amount of time.

This "thin film" water layer occurring prior to visible condensation is what I was referring
to.

David A. Douthit
Manager
LoCan LLC

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