RJ Klien Wassink suggests [bible p 169] pouring contaminated solder at about
190°C through a 20 mesh stainless steel stariner to reduce copper content to
0.25%.

Dave Fish
----- Original Message -----
From: "Phil Nutting" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, August 14, 2001 5:48 AM
Subject: [TN] Solder analysis results


> Ok folks, here is today's question.
>
> I just received a Certificate of Analysis (our first one) for the solder
> in our Soltec Waver Solder machine.  All parameters are "within
> specification" except the percentage of copper which is at 1.6859. (Tin
> is at 61.3% and Lead is at 36.99% and other stuff is at 0.0199%)  We run
> 63/37 in the wave.  We only solder our own product, none of which goes
> into "mission critical" applications.  We normally build our product to
> IPC-A-610C, Class 2.
>
> My question is two-fold.  Should I worry about this?  If so, how do I
> fix it with 1700 pounds of solder in the solder pot?
>
> Thanks is advance for sharing your knowledge.
>
> Phil Nutting
> Manufacturing Engineer
> Kaiser Systems, Inc.
>
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