HP 5973 MSD Hardware Manual page 115

Index
A
Adduct ion, 28
Alignment, analyzer and CI interface, checking, 48
Ammonia
increased maintenance required, 94
maintenance caution, 22
PCI spectrum of methyl stearate, 24
purity specification, 10
B
Background, air and water, 55
checking for at startup, 54
effect on NCI sensitivity, 32
effect on PCI, 24
troubleshooting, 70
Background, chemical
effect on PCI sensitivity, 24
minimizing by avoiding unnecessary tuning, 17
Ballast, foreline pump, 96
C
Calibrant vial, CI, refilling
Calibration valve, CI, 17
Cautions, inside front cover
Charge exchange, PCI, 29
Chemical background
effect on NCI, 30
Chemical ionization
hardware overview, 12
methane reagent gas, 22
molecular ion, 22
overview, 22
references, 23
water contamination, 22
ChemStation
using to pump down the MSD, 40
using to set up methane reagent gas flow, 54
using to vent the MSD, 38
CI autotune, 56
Methane PCI only, 57
CI calibrant vial
refilling, 98
CI calibration valve, 17
purging, 99
CI filament, 14
CI interface
heater clamp, 20
installing a GC column, 42
tip seal, 14
CI interface tip seal
installing, 48
CI ion source
cleaning, 95
installing, 46
CI operation, 35, 49
CI autotune, 56
general guidelines, 37, 51
installing the CI interface tip seal, 48
installing the CI ion source, 46
NCI autotune, 58
PCI autotune, 57
setting up methane gas flow, 54
setting up the software for, 52
start up in methane PCI first, 51
typical pressure readings, 63
using other reagent gases, 64
using the reagent gas flow control module, 61
CI reagent gas flow control module
see Reagent gas flow control module
CI repeller, 14
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