To Next Page

To Previous Page

Order online at www.agilent.com/chem/store

Gas Management

Agilent recommends that carrier

and detector gases be 99.9995% pure.

Air needs to be zero grade or better.

Agilent also recommends using traps to

remove hydrocarbons, water and oxygen.

When used with capillary columns, GC

detectors require a separate makeup gas

for optimum sensitivity. For each detector

and carrier gas, there is a preferred choice

for makeup gas. This table lists gas

recommendations for capillary columns.

Detector Carrier Gas Make up

1st choice

Make up

2nd choice

Purge or

Reference

Electron capture Hydrogen Argon/methane Nitrogen Anode purge must

be same as

makeup

Helium Argon/methane Nitrogen

Nitrogen Nitrogen Argon/methane

Argon/methane Argon/methane Nitrogen

Flame ionization Hydrogen Nitrogen Helium Hydrogen and air

for detector

Helium Nitrogen Helium

Nitrogen Nitrogen Helium

Flame

photometric

Hydrogen Nitrogen None Hydrogen and air

for detector

Helium Nitrogen

Nitrogen Nitrogen

Argon Nitrogen

Mass selective Hydrogen None None

Helium None None

Nitrogen

phosphorous

Helium Nitrogen Helium Hydrogen and air

for detector

Nitrogen Nitrogen Helium

Thermal

conductivity

Hydrogen Must be same as

carrier and

reference

Must be same as

carrier and

reference

Reference must

be same as carrier

and makeup

Helium

Nitrogen

Gas Purity and Selection

Brand	Agilent Technologies
Model	gc/ms series
Category	Laboratory Equipment
Language	English

Agilent Technologies gc/ms series User Manual

Table of Contents

Questions and Answers:

Agilent Technologies gc/ms series Specifications

Related product manuals