A last note, chloride ion is your worst enemy in preventing tarnish, and NO
known anti-tarnish chemistry will overcome it.  So, a very high Chloride
content in makeup, or rinse waters presents a virtually not-overcomeable
problem to getting panels through AOI without false defects.

As a sidenote, remember that "softened" water replaces water hardness with
Salt (Sodium Chloride) and thus is the WORST water to rinse with.  Use either
tap, or deionized water (or RO).

Rudy Sedlak
RD Chemical Company

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