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Agilent Technologies 5975 User Manual
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Chemical Ionization Theory
A
5975 Series MSD Operation Manual for MassHunter
179
Figure 36
Methyl stearate (MW = 298): EI, methane PCI, and ammonia PCI
178
180
Table of Contents
Table of Contents
5
Series MSD Operation Manual for Masshunter
9
1 Introduction
11
Introduction
12
5975 MSD Version
12
Abbreviations Used
13
The 5975 Series MSD
15
CI MSD Hardware Description
17
Important Safety Warnings
19
Electrostatic Discharge Is a Threat to MSD Electronics
19
Many Internal Parts of the MSD Carry Dangerous Voltages
19
Many Parts Are Dangerously Hot
20
The Oil Pan under the Standard Foreline Pump Can be a Fire Hazard
20
Hydrogen Safety
21
GC Precautions
21
Dangers Unique to GC/MSD Operation
22
Hydrogen Accumulation in an MSD
22
Precautions
24
Safety and Regulatory Certifications
26
Information
26
Symbols
27
Electromagnetic Compatibility
28
Sound Emission Declaration
28
Cleaning/Recycling the Product
29
Liquid Spillage
29
Moving or Storing the MSD
29
2 Installing Gc Columns
31
Columns
32
Conditioning Columns
32
Conditioning Ferrules
33
Tips and Hints
33
Installing GC Columns
34
To Reconfigure a 6850 GC Column on Its Basket
34
To Prepare a Capillary Column for Installation
39
To Install a Capillary Column in a Split/Splitless Inlet
41
To Condition a Capillary Column
43
To Install a Capillary Column in the GC/MSD Interface
45
Agilent 7890A and 7820A, and 6890 Gcs
45
6850 Gc
47
3 Operating in Electron Impact (Ei) Mode
51
Operating in Electron Impact (EI) Mode
52
Operating the MSD from the Data System
53
Operating the MSD from the LCP
53
Modes of Operation
53
LCP Status Messages
55
Chemstation Loading <Timestamp
55
Executing <Type>Tune
55
Instrument Available <Timestamp
55
Loading Method <Method Name
55
Loading MSD Firmware
55
Loading os
56
Method Loaded <Method Name
56
Method> Complete <Timestamp
56
MS Locked by <Computer Name
56
Press Sideplate
56
Run: <Method> Acquiring <Datafile
56
To View System Status During Startup
56
LCP Menus
57
The EI GC/MSD Interface
60
Before You Turn on the MSD
62
Pumping down
63
Controlling Temperatures
63
Controlling Column Flow
64
Venting the MSD
65
To View MSD Temperature and Vacuum in Manual Tune
66
To Set Monitors for MSD Temperature and Vacuum Status
67
To Set Analyzer Temperatures from the Instrument Control View
69
To Set the GC/MSD Interface Temperature from Masshunter
71
To Monitor High Vacuum Pressure
72
To Calibrate Column Flow Linear Velocity
74
To Tune the MSD in EI Mode
77
To Verify System Performance
79
To Perform High-Mass Testing (5975 Series Msds)
80
To Remove the MSD Covers
83
To Vent the MSD
85
To Open the Analyzer Chamber
88
To Close the Analyzer Chamber
91
To Pump down the MSD in EI Mode
95
To Move or Store the MSD
97
To Set the Interface Temperature from the GC
99
4 Operating in Chemical Ionization (CI) Mode
101
Operating in Chemical Ionization (CI) Mode
102
General Guidelines
102
The CI GC/MSD Interface
103
To Operate the CI MSD
105
To Switch from the EI Source to the CI Source
106
To Pump down the MSD in CI Mode
107
To Set up the Software for CI Operation
108
To Operate the Reagent Gas Flow Control Module
110
To Set up Methane Reagent Gas Flow
114
To Use Other Reagent Gases
117
To Switch from the CI Source to the EI Source
121
CI Autotune
122
To Perform a PCI Autotune (Methane Only)
124
To Perform an NCI Autotune (Methane Reagent Gas)
126
To Verify PCI Performance
128
To Verify NCI Performance
129
To Monitor CI Mode High Vacuum Pressure
130
5 General Maintenance
133
Before Starting
134
Maintaining the Vacuum System
139
To Replace the Primary Fuses
140
To Remove the EI Ion Source
142
To Disassemble the EI Source
144
To Clean the EI Source
146
To Assemble an EI Source
149
To Replace a Filament in an EI Source
152
To Reinstall the EI Ion Source
154
To Replace the Electron Multiplier Horn
156
6 CI Maintenance
159
General Information
160
To Set up Your MSD for CI Operation
161
To Install the CI Ion Source
162
To Install the CI Interface Tip Seal
164
To Remove the CI Source
165
To Disassemble the CI Source
167
To Clean the CI Source
169
To Assemble the CI Source
171
To Replace a Filament in a CI Source
173
A Chemical Ionization Theory
175
Chemical Ionization Overview
176
Positive CI Theory
178
Negative CI Theory
185
5
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Agilent Technologies 5975 Specifications
General
Brand
Agilent Technologies
Model
5975
Category
Laboratory Equipment
Language
English
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