Quality GCMS control sample
Posted: Mon Jan 25, 2010 9:28 am
Hi
I'm looking for a compund (or several) to use as quality control in a PerkinElmer clarus 500 system (GCMS). I use THF as a solvent which seem to overtime degrade most of my analytes. However I need a control solution to keep on stock (cooled) that is very stable and gives several peaks (5-10) over the GC elution (method can be setup to run this control). The column is a DB-5 which should accept most compounds.
So - anyone know any good compunds for a stable (~six months at least) control solution? Preferably commonly available or cheap.. I would prefer a solvent with a low gas volume (currently injecting 2,5µL THF into a ~900µL liner)
I'm looking for a compund (or several) to use as quality control in a PerkinElmer clarus 500 system (GCMS). I use THF as a solvent which seem to overtime degrade most of my analytes. However I need a control solution to keep on stock (cooled) that is very stable and gives several peaks (5-10) over the GC elution (method can be setup to run this control). The column is a DB-5 which should accept most compounds.
So - anyone know any good compunds for a stable (~six months at least) control solution? Preferably commonly available or cheap.. I would prefer a solvent with a low gas volume (currently injecting 2,5µL THF into a ~900µL liner)