Agilent Technologies gc/ms series User Manual

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The appropriate maintenance frequency for the Headspace Sampler varies significantly
depending on the sample matrix, solvents, temperatures, and sample throughput.
Recommended Maintenance Schedule
Maintenance
Activity
Low Boiling Solvents
(water, food, flavor analyses)
High Boiling Solvents
(OVI, blood alcohol analysis)
≤ 70
samples/day
> 70
samples/day
≤ 70
samples/day
> 70
samples/day
Replace sample
probe
6 months 3 months 3 months Every month
Steam clean 6 months 3 months 3 months Every month
Replace loop and
deactivated tubing
With PM With PM With PM 6 months
Check tray tension
and alignment
12 months 6 months 12 months 6 months
PM for headspace
and inlet
36 months 12 months 12 months 6 months
Extended PM
for headspace
60 months 36 months 24 months 12 months
Headspace Sampler
G1888 Headspace sampler

Agilent Technologies gc/ms series Specifications

General

Dynamic Range	10^6
Mass Range	1050 amu
Mass Resolution	Unit mass resolution
Scan Speed	Up to 12, 500 amu/sec
Ionization Mode	Electron Ionization (EI), Chemical Ionization (CI)
Temperature Range	Up to 350°C
Vacuum System	Turbomolecular Pump
Data System	Agilent MassHunter

Summary

Gas Management

Gas Purity and Selection

Gas Purification Systems

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

Sample Introduction

Selecting Vial Septa Materials

Gold Standard Autosampler Syringes

Syringe Troubleshooting Guide

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

Inlets

Premium Non-Stick Septa

Split/Splitless Liners

Agilent MS Certified Liners

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.

Purged Packed Inlets

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.

Nitrogen Phosphorus Detector (NPD)

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.

Mass Spectrometer Symptoms

Ion Source

Installing a Capillary Column in the GC/MSD Interface

Vacuum Systems and Pumps