Does rinsing the XBridge BEH C8 column with a mixture of methanol/water (pH = 2) affect its efficiency?

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Narong Chamkasem

According to Waters web site, this column is "very" stable at low pH. they use 0.1% TFA for long term analysis and it is good. check this site for details

http://www.younglin.com/brochure_pdf/waters/XBridge%20Columns.pdf

Zakaria Rachid

Dear CHAMKASEM AND GUZMAN

Thank you very much for your advices