By Anonymous on Thursday, August 7, 2003 - 07:30 am:
I use an Ion Trap Mass spectrometer with 30m x 0.25mm id x 0.25um and injection volumes 0.1uL at 100 - 200:1 split. I always time the filament/multiplier to come on after the solvent has eluted.
I always miss peaks of interest that elute before or very near the solvent. Does leaving the multiplier/filament on through the solvent really harm these components or just make them wear out slightly quicker?
I am doing this as a qualitative exercise.
By Anonymous on Thursday, August 7, 2003 - 12:32 pm:
Whenever I need to find a peak prior to the solvent. I use the detector on/off time function on my instrument. My instrument is a 5972 with chemstation. Perhaps if you tell us what your software and instrument model is, someone can assist you in how to turn on and off the detector instead of using solvent delay.
By Anonymous on Wednesday, August 13, 2003 - 07:17 am:
My experience has been that filament life degrades more quickly due to leaks in the system, than due to solvent.
Just my experience,
Chris
By Ron on Wednesday, August 13, 2003 - 08:34 am:
You probably won't have any filament problems with the small volumes and high split you are running. 2 uL splitless might cause filament problems, but this is also related to filament design and manufacturing quality.
By Anonymous on Wednesday, June 2, 2004 - 02:27 am:
As my component of interest & solvent are coeluting on using an optimum solvent delay,can i use GC-Ms without solvent delay. what splitratio is safe for the filament?