IUBio

Can I prepare SDS-PAGE gel mixes in advance?

Andreas Strecker strecker at chemie.fu-berlin.de
Tue Jan 14 12:45:40 EST 1997


On 12 Jan 1997 13:40:33 GMT, "Thorsten Schmidt"
<Thorsten.Schmidt at rz.ruhr-uni-bochum.de> wrote:

>Dear reader!
>
>I make many Western blots and SDS-PAGE-gels.
>
>For each gel, I have to mix
>- Acrylamid-Mix (29 % acrylamid / 0,8 % bis-aa)
>- Tris-Buffer
>- Water
>- 10 % SDS
>- TEMED
>- 10 % APS
> 
>to pour a 3% and a 10% gel.
>
>Is there anything to be said against preparing a 3 % and a 10 % gel-mix
>by mixing the componets (except for APS & TEMED) in advance?
>
>It would minimize time by just adding TEMED & APS to a aliquot!
>Or isn´t it good to store such a mix for a longer time?
>
Hi Thorsten!

There simply is NOTHING to say against storing premixed gel solutions
as long as you keep them in a freezer (-20 degr.). You should be able
to keep them at least for a couple of months. And it improves the
reproducibility of your gels (if that is important for you). We have
made good experience with it. 

Andreas



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