By Anonymous on Thursday, June 3, 2004 - 09:43 am:
I recently install a 60m column into my GC/MS. My problem is that I have to shoot my standard every few week instead of months, like before I install the new column. The peak height detection keep varying. Since I use standardize to calibrate, my samples for QC keep going off. Any help?
By Anonymous on Monday, June 7, 2004 - 09:22 pm:
You may have over tightened the injection port nut. Or used the wrong ferrul.
By Anonymous on Tuesday, June 8, 2004 - 09:23 pm:
Column position may be incorrect.
By Yury on Thursday, June 10, 2004 - 01:11 am:
apparently there is a leakage somewhere, so check column connections for that with acetone or another solvent
By Anonymous on Wednesday, June 16, 2004 - 02:18 pm:
There is no leakage in the system. My problem is reproducibility. Any help would be great. Thank you for all the sugestion.