5 Operating in CI Mode
CI Autotune
118 5977C GC/MSD Operating Manual
Table 10 Reagent gas settings
Reagent gas Methane Isobutane Ammonia EI
Ion polarity Positive Negative
Positive Negative Positive Negative N/A
*
* N/A Not Available
Emission 150 A 50 A 150 A 50 A 150 A50 A 35 A
Electron energy 150 eV 150 eV
150 eV 150 eV 150 eV 150 eV 70 eV
Filament 1 1 1 111 1 or 2
Repeller 3 V 3 V
3 V 3 V 3 V 3 V 30 V
Ion focus 130 V 130 V
130 V 130 V 130 V 130 V 90 V
Entrance lens offset 20 V 20 V 20 V 20 V 20 V 20 V 25 V
EM volts 1200 1400
1200 1400 1200 1400 1300
Shutoff valve Open Open
Open Open Open Open Closed
Gas select A A B BBB None
Suggested flow 20% 40%
20% 40% 20% 40% N/A
Source temp 250 °C 150 °C
250 °C 150 °C 250 °C 150 °C 230 °C
Quad temp 150 °C 150 °C 150 °C 150 °C 150 °C 150 °C 150 °C
Interface temp 280 °C 280 °C
280 °C 280 °C 280 °C 280 °C 280 °C
Autotune Yes Yes
No Yes No Yes Yes