On Mon, 16 Apr 2007 16:30:58 +0100, you wrote:

>Hi,
>
>Just received a syringe of solder paste and it says "best before 18th week"
>which is pretty soon. Is that normal that a paste goes so quick? Can I
>extend it's lifetime by keeping it in fridge / freezer?
>

Remember the mfr has to guarantee consistent performance for things like automatic dispensing and
screen-printing - hand-application is somewhat less critical, and shelf-lives of a couple of years
are common, but it does vary with manufacturer and storage conditions. 
It doesn't hurt to keep it in the fridge though - I tend to keep the  original syringe in the fridge
and  decant some out into the working dispenser on the bench. Remember that it will get more viscous
when cold though so keeping your normal working stuff in the fridge can be counterproductive if you
need to warm it up to get it to flow...!

. 




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