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On Oct 24, 2011, at 10:02 AM, AllisonH wrote: > On 24/10/2011 3:54 AM, DK wrote: >> In article<[email protected]>, >> lautys<[email protected]> wrote: >>> APS should prepare fresh every time you do your gel. >> >> For how much longer will this myth be propagated? >> >> There is nothing wrong with aliquoting APS and storing it at -20. I've used >> APS >> solutions that were certain to be close to a year old stored at -20C and it >> still >> worked fine with no obvious change in polymerization time (0.05-0.1% APS >> final). >> >> DK > > I was going to jump in with a similar comment but you beat me to it! > I also aliquot my APS and store at -20C with no loss in activity. It's also > ok for a several days at 4C (I used it up to a week later). Sure beats > having to weigh it out each time. > Allison > In fact I've used APS solution stored at 4 degrees for more than a month with no polymerization problems. _______________________________________________ Methods mailing list [email protected] http://www.bio.net/biomail/listinfo/methods
