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Agilent Technologies gc/ms series User Manual

Agilent Technologies gc/ms series
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21
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Sample Introduction
Vial Filling
When filling sample vials, keep in mind:
If you need to test a large amount of sample over repeated injections, divide the sample
among several vials to obtain reliable results.
When sample volume in the vial is low, contaminants from the previous sample
injection or solvent washes may have a greater impact on the sample.
The airspace in the vial is necessary to avoid forming a vacuum when sample
is withdrawn. This could affect reproducibility.
Preparing Sample V
ials
The Agilent 7683 Automatic Liquid Sampler Injector and the tray use clear or amber
glass sample vials with crimp, snap, or screw top vials. The following diagram shows
the critical dimensions for sample vials and microvial inserts to be used with the 7683
Automatic Liquid Sampler. These dimensions do not make up a complete set of
specifications. Incompatible sample vials cause tray and turret errors.
All dimensions in millimeters
Microvial insert Crimp cap sample vial Maximum height of a capped vial
34.5 maximum
5 minimum 6.25
8.2
11.7
32
3.7
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Agilent Technologies gc/ms series Specifications

General IconGeneral
Dynamic Range10^6
Mass Range1050 amu
Mass ResolutionUnit mass resolution
Scan SpeedUp to 12, 500 amu/sec
Ionization ModeElectron Ionization (EI), Chemical Ionization (CI)
Temperature RangeUp to 350°C
Vacuum SystemTurbomolecular Pump
Data SystemAgilent MassHunter

Summary

Gas Management

Gas Purification Systems

Overview of purifiers for removing oxygen, moisture, and hydrocarbons to achieve proper gas purity.

Sample Introduction

Syringe Troubleshooting Guide

Guidance on common syringe problems like bent plungers or needles and their solutions.

Inlets

Split/Splitless Inlets

Overview of the popular split/splitless inlet and troubleshooting common issues like peak broadening.

Cool On-Column Inlets

Advantages of cool on-column injection, sample considerations, and troubleshooting tips.

Programmed Temperature Vaporizer (PTV) Inlets

Benefits, practices, and rationales for PTV inlets, offering flexibility in sample introduction.

Detectors

Flame Ionization Detector (FID)

Routine maintenance, typical problems, and troubleshooting for the FID.

Electron Capture Detector (ECD)

Liner selection, makeup gas adapter maintenance, thermal cleaning, and leak testing for ECD.

Thermal Conductivity Detector (TCD)

Filament maintenance, lifetime extension, cell contamination, and solvent flush procedures for TCD.

Flame Photometric Detector (FPD)

Recommended gas flows, maintenance, contamination, and ignition problems for the FPD.

GC/MS Systems

Maintaining Mass Selective Detectors (MSD)

Benefits of maintaining GC/MSD systems, including reduced downtime and longer lifespan.

MSD Contamination

Identifying contamination sources in the GC and MSD, and common contaminants and their origins.

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