We just saw an example of a third party lab doing solder purity testing
making an honest mistake. We are talking small amount of trace metals.
There is some variation in test results.
But, here is what you do, as for a sample from company B, melt it in a
clean solder pot, pull a sample from both A and B and have them test
both.


> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Paul Truit
> Sent: Friday, March 14, 2003 11:05 AM
> To: [log in to unmask]
> Subject: [TN] Solder analysis for 63/37
>
>
> I have an issue I'd like to hear from this forum.  I have
> recently had a sales call from "solder company B" wanting to
> sell me solder.  When asked which solder company I use
> "solder company A"  I am warned about the possibility of not
> receiving virgin grade metals.  Suggests that I have an
> analysis performed to verify.  I allowed "company B" to
> perform the analysis but I also sent a sample out to "company
> A" for the same test.  The results came back not agreeing.
> One said my solder is fine in regard to tin content (62.78%)
> the other said it was bad (60.8%)  The skeptic in me doesn't
> want to believe either of them right now.
>
> Purchasing loves to "shop" for the best price on solder.
>
> Can someone tell me about this virgin grade versus reclaimed
> solder?  Is this a marketing idea? What defects would I see
> from the "inferior" one? How do I know if my solder was from
> "reclaimed" metal?  Isn't tin tin and lead lead?  Is there an
> unbiased source to send a solder sample to so I can really
> know what is in my solder pot?
> --
> Paul Truit, Mfg. Eng.
> RBB Systems, Inc.
> 4265C E. Lincolnway
> Wooster, OH  44691
> Ph. (330) 567-2906 ext 514
> Fax (330) 263-5324
> Email: [log in to unmask]
>
>

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