I recently received some 5M betaine solution (in H20) with the dry ice already gone due to an addressing error on the companies part. I am working to get the company to send out a complementary replacement, but in the meantime am curious whether the Betaine is ok or not? How temperature sensitive is betaine solution? It arrived cold, but with no dry ice left. According to USB, who sent the solution, it is supposed to be stored at -20. However, Sigma's webpage states that it should be stored at +2-8 (http://www.sigmaaldr...=0&QS=ON&F=SPEC) and Q-Bio-Gene (http://www.qbiogene..../pcr/dmso.shtml) says it should be stored at room temp. I plan to use it for a qPCR assay.
Anyone have any experience with the thermostability of betaine solution?
Edited by dtae, 18 January 2011 - 01:03 PM.