Table of Contents
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Index
Carrier gas
contaminated, 90
flow, 34
purity requirement, 18, 32
See also Column flow
Cautions, inside front cover
Checking
diffusion pump fluid, 110
foreline pump oil, 102
Checklist, pre-operation, 32
Chemical residue, hazardous, 99
ChemStation, 32
controlling temperatures with, 34
monitoring temperatures and vacuum, 36
setting monitors, 38
setting the GC/MSD interface temperature, 42
using to pump down the MSD, 58
using to tune the MSD, 48
using to vent the MSD, 52, 64
Chromatography, abnormal results, 70
Cleaning the ion source, 150
Cleanliness, importance during maintenance, 144
Closing the vacuum manifold, 56
Column bleed, 18
as a source of contamination, 90
Column flow, 34
calculating average linear velocity, 46
effect on vacuum manifold pressure, 45
for optimum sensitivity, 35
maximum for diffusion pump MSD, 16
maximum for turbo pump MSD, 16
measuring with the MSD, 34, 46
282
Column installation tool, 28
Column nut
leaking, 89
part numbers, 20, 28
Columns
conditioning, 18, 24
installing, 15 – 30
installing in a split/splitless inlet, 22
installing in the GC/MSD interface, 26, 28
table of size, pressure, and flow, 17
tips and hints, 18
types that can be used with the MSD, 16
See also Column flow
Compression seals, 192
Conditioning capillary columns
importance of, 18
procedure for, 24
Conditioning ferrules, 18
Connectors, 245
foreline pump cord receptacle, 246
high vacuum power (HIVAC POWER), 246
high vacuum signal (HIVAC SIGNAL), 246
HP-IB (I/O), 245
power cord receptacle, 246
remote start, 245, 248
Consumables, part numbers of, 276
Contamination, 90
avoiding after cleaning the ion source, 144
table of common contaminants, 91
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