Jandirk Sendker

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Questions related from Jandirk Sendker

LCMS: Why can measurements in negative mode recover sensitivity that has been lost after many measurements in positive mode?

We have repeatedly observed dramatic and often sudden losses in the sensitivity of our qTOF-MS during long series of measurements in positive mode. Starting from this situation, measurements in...

23 May 2017 4,311 7 View

What is the capacity of a RP18 SPE catridge?

A compound (steroidal alkaloid) was isolated by preparative HPLC and is now solved in a large volume of ~20% acetonitrile with 0.1% formic acid. We thought about concentrating the compound after...

22 April 2015 1,714 3 View