Bob,
Too many unknowns to give you a good answer. 
1.  Why is acetone used to wipe down the boards?  Bad idea in general.
2.  What is meant by "boards appeared dirty"?  What visual effect is being 
noted?  And is this at the bare board level or after some processing>

Doug Pauls



From:   Robert DeQuattro <[log in to unmask]>
To:     <[log in to unmask]>
Date:   02/20/2014 11:01 AM
Subject:        [TN] Acetone as a cleaning agent for PCBA's
Sent by:        TechNet <[log in to unmask]>



I have a customer that uses acetone to wipe down their PCBA's upon 
receipt.
The assemblies we make for them are cleaned using a closed loop aqueous 
board washer then sampled for cleanliness with our zero-ion tester per 
J-std-001E guidelines.
Recently this customer commented that boards appeared dirty upon cleaning 
with the acetone.  Does anyone have any thoughts on this acetone cleaning 
process.
Thanks,

Bob

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