mc wrote in message
news:zqrDh.16146$z6.4928@bigfe9...
Greetings,

I've never done hot-air soldering but am helping set up a lab. I
understand
we need solder paste and its shelf life is short. But I just found some
solder paste that has been out of refrigeration more than 7 years, and it
still looks like paste. What quality has it lost? Stickiness?

Thanks!



Can you try accelerated aging tests.
I remember there was a daily cycle of over-night freezing and (day ) low
oven heating that closely resembled aging for paint, so 1 week accelerated,
simulated about 1 year of normal conditions

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/