I have had similar experience with well expired paste. I just don't worry about it.
The issue is the solder is ground to such a fine powder that it has a huge surface area to oxidize. As long as you keep the air off, and refrigerate the paste, it seems to go forever. Oh, and I only use tin/lead paste, not the RoHS stuff. -Chuck Harris Steve Wiseman wrote: > On 18 August 2016 at 07:07, Bob Albert via time-nuts <[email protected]> > wrote: >> I didn't use the liquid solder because I didn't have any and it doesn't keep >> very long. > > That's not really the case. It may change consistency so that it > behaves a little differently and fouls up automated stencilling > machines (which are the most finicky devices on the planet), but with > a human in the loop, you can expect most of a decade unless you let > it dry out or do something daft. > I'm still happily using stuff with a 2007 expiry code, in (big) > plastic syringes. Still behaves fine. (and the benefit of the > stirred-in flux and excellent wetting does make paste a joy to use > compared to even good solder wire). > 'Expired' solder paste can be a bargain. > > Steve > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
