Hi Amol - I recommend running an FTIR analysis of the white residue. If the
material is flux/flux residue, you should be able to match the FTIR scan of
the white residue against your known flux material's FTIR signature. Good
Luck.

Dave



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                                       [TN] White Residue in the oven
             04/11/2006 10:46
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Hi Technetters,
I have a white residue coating all over my reflow oven innards (almost
looks like white fungus). How can I absolutely be certain that it's flux
and not anything else?are there any tests available for this? I am planning
to check the oven exhaust for correct air flow rates.....anything else I
should be looking out for?. We are using a water soluble halide free flux
and SnPb solder

Thanks in advance

Amol Kane
M.S (Industrial Eng.)
Process Engineer
Harvard Custom Manufacturing
941 Route 38  Owego, NY 13827
Phone: (607) 687-7669 x349
[log in to unmask]

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