Solder paste shelf life
in [Repair]
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From: oparr on 31 May 2010 09:44 Have some leaded, water soluble solder paste (Kester HM531) for the last 3.5 years. Used it yesterday and it seems to still work like new. IIRC, shelf life was given as the usual six months. What gives?
From: Jeffrey D Angus on 31 May 2010 11:03 oparr(a)hotmail.com wrote: > Have some leaded, water soluble solder paste (Kester HM531) for the > last 3.5 years. Used it yesterday and it seems to still work like new. > IIRC, shelf life was given as the usual six months. What gives? The difference between "It probably still works" and it will "definitely work." Jeff -- �Egotism is the anesthetic that dulls the pain of stupidity.� Frank Leahy, Head coach, Notre Dame 1941-1954 http://www.stay-connect.com
From: N_Cook on 31 May 2010 12:17 <oparr(a)hotmail.com> wrote in message news:e1621cfe-25f3-4a9f-8c1b-8fc9af272b0b(a)o15g2000vbb.googlegroups.com... > Have some leaded, water soluble solder paste (Kester HM531) for the > last 3.5 years. Used it yesterday and it seems to still work like new. > IIRC, shelf life was given as the usual six months. What gives? > The stuff I use is water soluble Alphametals/Tolworth/England. Dated 1990 on the pot , I just pastify a bit by mixing with "La-Co"/ Chicago flux and seems to work fine. -- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on http://diverse.4mg.com/index.htm
From: oparr on 31 May 2010 13:05 >The stuff I use is water soluble Alphametals/Tolworth/England. Dated 1990 on >the pot , I just pastify a bit by mixing with "La-Co"/ Chicago flux and >seems to work fine. I'm wondering whether water soluble has a big edge in terms of shelf life. The paste I had before this wasn't water soluble and it was useless after 8 months. It was refrigerated and handled the same way as the Kester HM531. On May 31, 12:17 pm, "N_Cook" <dive...(a)tcp.co.uk> wrote: >
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