Zack,

Each supplier is going to have different levels of thiourea and acids in their
solder conditioner, so they will all work slightly different.  Additionally,
your solder type (or brand) may be more susceptible to oxidation, and/or your
alkaline etcher may be running at a very high pH, which forces you into
needing a stronger formula.

I'd recommend that you try a few suppliers to find the one that works best.
If this doesn't work you may have to look at the solder bath, or at the way
you're etching.

Feel free to contact me if you'd like more information, or if you have any
questions.

Sincerely,

Scott Griggs
Senior Applications Engineer
RBP Chemical Corp.
(612) 825-6113
[log in to unmask]

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