In a message dated 97-12-19 10:25:33 EST, you write:

> Has anyone come across a white residue on the circuit side of board
>  assemblies after cleaning?  We are using Axarel 32 in a semi-aqueous
>  cleaner to remove an RMA flux after the wave solder operation.
>  Thanks for your help!

Larry,

I would suspect the white residue is abietic acid, a residue from your RMA
flux.  It may indicate that your Axarel is becoming loaded and due for a
change.  In our experience, the white residue is benign and not a concern,
other than ascetics.

Doug Pauls
CSL

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