Christian Berchtold

6 Questions 14 Answers 0 Followers

Questions related from Christian Berchtold

Who has experience with hypercarb coloumns?

Who has experience with hypercarb coulms? We like to analyze the polar metabolites in cell lysate (by MS). The hypercarb (we just purchsed) shows very nice interaction with quite polar metabolites...

28 July 2015 8,068 2 View

Are there extra small HPLC vials for minimum sample volume (<10 microliter)?

I am looking for extra small vials for HPLC. Standard vials with inserts have usually a volume of 150 or 200 microliter and a minimum volume of 10 microliters. For an application I would like to...

19 November 2014 7,387 6 View

Is there a specifc (standard) method to separate erythrocytes from whole blood samples for further analysis?

We like to analyze the erythrocytes metabolome and have whole blood samples to prepare. We would like to separate the erythrocytes befor we lyse and extract them. therfore we search a...

19 November 2014 1,739 13 View

Is there a commercial metabolite test mix?

I am looking for a test mixture to validate and test suitable setups for several metabolomics experiments (targeted and non-targeted). For this purpose it would be nice to have a reference mixture...

06 November 2014 7,906 6 View

I am looking for a mass calibrant in the range of m/z 2000 to 4000

We need an accurate mass calibration solution which covers the whole mass range without contaminationg our system too much. Actually we use a mix containing Ultramark 1621 and several other...

29 July 2013 5,799 7 View

Can someone suggest a reference Standard for 18:2 Lyso Phosphatidic acid (Linoleic acid as phosphate glycerol ester)?

We need this standard for a quantidative LC/MS/MS study in plasma

24 July 2013 6,579 2 View