Waters GCT Premier Operator's Manual page 105

magnification factor
Requirements:
• If the instrument was tuned in negative ion mode, use the mass
values shown in the
magnification factor results for methyltriazine in EI and CI positive
ion mode:" on page
• The magnification factors for each ion mode are different; you must
calculate them separately for EI+, EI-, CI+, and CI-.
Mass values and example magnification factor results for heptacosa in
EI and CI positive ion mode:
Mass
68.99518
130.9919
218.9856
413.9774
501.9711
Mass values and example magnification factor results for
methyltriazine in EI and CI positive ion mode:
Mass
68.99521
121.0013
189.9965
265.9964
284.9949
peak intensity in high intensity mode
----------------------------------------------------------------------------------------
=
peak intensity in low intensity mode
Table titled "Mass values and example
4-17.
Magnification factor
34.51
23.01
23.90
23.25
27.69
Magnification factor
50.65
43.28
35.25
28.04
28.11
Setting up DRE mode 4-17