Contact Us

C o n t a c t U s

Alternate Carrier Gas Solutions Agilent

Agilent system utilities, software and hardware features help analysts convert helium methods to alternate carrier gases. Request more information.

Carrier Gases in Capillary GC Analysis Agilent

CARRIER GAS Mobile Phase •Carries the solutes down the column •Selection and velocity influences efficiency and retention time •Must be inert to solutes and stationary phase Capillary columns manufactured by Agilent Technologies have a general dimensional specification of:

Hydrogen Carrier Gas Safety Guide Agilent

Hydrogen (H2) Carrier Gas The use of hydrogen as a GC carrier gas is potentially dangerous Hydrogen is a commonly used GC carrier gas. Hydrogen is potentially Agilent Technologies, Inc. Printed in USA, AUG 2002 5955-5398. Title: 5955-5398.book Author: jcd Created Date: 8/26/2002 4:21:19 PM

Carrier Gases in Capillary GC Analysis-e-seminar 021511.ppt

Agilent Restricted Page 11 Carrier Gas Selection u (cm/sec) u opt and OPGV u opt: Maximum efficiency OPGV: Optimal practical gas velocityOptimal practical gas velocity Maximum efficiency per unit time 1.5 2x u opt Group/Presentation Title Agilent Restricted Page 12. VAN DEEMTER CURVE Nitrogen N2 1.00 0.50 0.75 H 0.25

Agilent Careers

Agilent Malaysia Named Aon Hewitt’s Best Employers for 2018. Agilent is ranked #58 on Corporate Responsibility's list of the 100 Best Corporate Citizens.. Agilent featured in Glassdoor's blog post "9 Companies That Offer Impressive Perks & Benefits."Agilent supports CEO Action for Diversity & Inclusion ™, the largest CEO-driven business commitment to advance diversity and inclusion within

Converting GC Methods from Helium to Nitrogen Carrier Gas

The Carrier Gas Decision Agilent Restricted Page 3 . He Conservation . Consider migration to N 2. Consider migration to H. 2 . GC/MS specific H. 2. considerations . Is the chemist willing to convert . to alternative gasses? Is the Application based on . GC or GC/MS? Does the current GC method . have too much resolution? No . No Yes Yes . GC

Inline Gas Purifiers Agilent

Agilent inline gas purifiers (traps or filters) remove common contaminates such as oxygen, moisture, and hydrocarbons from GC carrier and detector gases. Our inline gas purifiers are available in different sizes and configurations such as combination gas traps that remove moisture, oxygen, and/or organics with a

Delivering Clean Gases for Accurate Analyses Agilent

Agilent Carrier Gas filter N 2 Stabilization profiles Carrier Gas filter 0 500 1000 1500 2000 2500 3000 3500 4000 4500 Other Carrier Gas filter 0 20 40 60 80 100 120. 4 Test tube containing a competitor’s indicator (yellow) and the Gas Clean indicator (green) at the start of the experiment.

Have you switched to hydrogen carrier gas? What Agilent

Dec 17, 2018 The optimum carrier gas linear velocity is different than helium so use the available tools to get it right. The signal to noise ratio on a GCMS system will be less than when running helium up to 2x to 5x worse. I think Agilent has one. I know Restek does.

Maintaining your Agilent GC and GC/MS Systems

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

Argon as carrier gas? Agilent Community

Nov 07, 2018 Why is argon not an option as carrier gas on Agilent 6890/7890 gas chromatographs? Argon is by far the best carrier gas when detecting hydrogen using a TCD as detector. In 7890 configuration setup, we can select argon/methane as carrier gas (as a substitute for argon) But no argon/methane can be selected as reference- or make-up gas

Protocol Agilent 7890 Gas Chromatography Analysis of

Apr 01, 2019 Carrier Gas Purity. The carrier and standard gas purity in the Robertson GHG Lab meet or exceed all Agilent specifications. Gas purity is certified down to 10% of the starting pressure. For most cylinders, this means the cylinder should be replaced at no lower than 200 psi remaining. Traps are also employed as an additional step to ensure gas

Converting Agilent GCMS to Hydrogen Carrier Gas Final

Conversion of Agilent EI GC/MSD Systems From Helium To Hydrogen Carrier Gas Bruce D. Quimby, Ph.D. GPD Solutions Group and Harry F. Prest, Ph.D. GC/MS Research and Development October 9,

Conversion of Agilent EI GC/MSD Systems To Hydrogen

Hydrogen Carrier Gas Agilent Technologies BeNeLux Jan van Laar 1. Introduction: Converting From He To H 2 • Many GC/MS users are considering changing from helium to hydrogen carrier gas due to

Have you switched to hydrogen carrier gas? What Agilent

Dec 17, 2018 The optimum carrier gas linear velocity is different than helium so use the available tools to get it right. The signal to noise ratio on a GCMS system will be less than when running helium up to 2x to 5x worse. I think Agilent

Maintaining your Agilent GC and GC/MS Systems

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

Looking to use alternative carrier gas from Helium Agilent

Jun 28, 2019 In the past at another company I used same equipment with helium as a carrier gas and built a mass spec library including retention times, etc. Using the column DB-5ms 40m x 0.18mm x 0.18um. Now that Helium is difficult to get, when we buy this equipment from Agilent I want to start off using a carrier gas

How To Vent (Shut Down) the GC/MSD EI MassH Agilent

Aug 12, 2020 If hydrogen is used as a carrier gas or JetClean system supply, the carrier and JetClean system supply shutoff valves must be closed before turning off the MSD power. If the foreline pump is off, hydrogen will accumulate in the MSD and an explosion may occur. Read Agilent GC/MS Hydrogen Safety before operating the MSD with hydrogen gas.

AGILENT TECHNOLOGIES 6890 SERIES OPERATING MANUAL Pdf

Page 14 Introduction to Inlets Using hydrogen Table 3 Column Size and Carrier Gas Flow Rate Column type Column size Carrier gas flow rate Hydrogen Helium Packed 1/8 inch 1/4 inch 50 µm id Capillary

Issues with carrier gas flow and pressure with Agilent

Nov 18, 2013 Issues with carrier gas flow and pressure with Agilent 6890A. Discussions about GC and other "gas phase" separation techniques. 11 posts Page 1 of 1. Issues with carrier gas flow and pressure with Agilent

Carrier Gas Selection for Capillary Gas Chromatography

Carrier gases in gas chromatography are used to move the solutes through the column. Helium, hydrogen and nitrogen are the most widely used gases. Nitrogen provides the best efficiency but is

Using Nitrogen instead of Helium as carrier gas, while

• Using Nitrogen instead of Helium as carrier gas, while maintaining exact the same separation efficiency, retention times, peak elution order, without changing the oven temperature conditions. Jaap de Zeeuw Restek Corporation, Agilent

Maintaining your Agilent GC and GC/MS Systems

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

AGILENT TECHNOLOGIES 6890 SERIES OPERATING MANUAL Pdf

Page 14 Introduction to Inlets Using hydrogen Table 3 Column Size and Carrier Gas Flow Rate Column type Column size Carrier gas flow rate Hydrogen Helium Packed 1/8 inch 1/4 inch 50 µm id Capillary

AGILENT TECHNOLOGIES GC/MS SERIES MAINTENANCE

Page 5 Gas Management Gas Purity and Selection Agilent recommends that carrier and detector gases be 99.9995% pure. Air needs to be zero grade or better. Air needs to be zero grade or better. Agilent

Carrier Gas Selection for Capillary Gas Chromatography

Carrier gases in gas chromatography are used to move the solutes through the column. Helium, hydrogen and nitrogen are the most widely used gases. Nitrogen provides the best efficiency but is

Using Nitrogen instead of Helium as carrier gas, while

• Using Nitrogen instead of Helium as carrier gas, while maintaining exact the same separation efficiency, retention times, peak elution order, without changing the oven temperature conditions. Jaap de Zeeuw Restek Corporation, Agilent

Agilent J&W GC Column Selection Guide Teknolab

The first step in the GC process is to supply one or more high-purity gases to the GC. One of the gases (called the carrier gas) flows into the injector, through the column and into the detector. Next, a

Nitrogen Carrier Gas for GC Is it Feasible? Is it

May 01, 2012 Nitrogen is not preferable as a GC-MS carrier gas for two main reasons: it is very slow, chromatographically speaking (but efficient!, i.e. good separating power under optimal linear velocity,

The Thermal Conductivity Detector

Reference and makeup gas must be the same as the carrier gas, and the gas type must be specified in both the inlet and detector control tables. When using packed columns, we recommend a small makeup gas flow (2 to 3 mL/min) to get the best peak shapes. Use Figure 78 to select a value for reference gas

Shutting Down GC-MS System Agilent Community

Oct 11, 2018 Anyways, we recently purchased and installed a refurbished Agilent 6890-5973 GC-MS system using He gas as our carrier. Currently, this instrument will only be used for teaching

How to Condition a New Capillary GC Column

With carrier gas still flowing, cool the oven, install a fitting and ferrule onto the detector end of the column as outlined above, connect the column to the detector, and repeat steps 1-4. Your column should now

Ultra Clean Gas Filters Catalog PerkinElmer

Triple Filter N9306819 Carrier Gas Kit Part No. N9306829 Ultra Clean Gas Filters for GC Moisture Removal Moisture in carrier gas lines will pre-maturely degrade oxygen and hydro-carbon traps and increase detector noise. As a precaution, we higly rec-ommend installing a moisture trap before the hydrocarbon and oxygen traps on all carrier gas

Carrier Gases for GC / Chromatography Information / Restek

The diffusion speed of the solute in the carrier gas determines the speed of chromatography. A solute molecule evaporating from the stationary phase surface into the gas stream should be given enough

AGILENT TECHNOLOGIES 7890B INSTALLATION AND STARTUP

Cool the oven. Leave the carrier gas on. If using a flammable carrier gas (hydrogen), continue to vent the column exhaust to a fume hood. (Prevent hydrogen gas accumulation in the GC.) Agilent 7890B Installation Page 63: Step 16. Bakeout The Detector Turn the detector gases

Using Hydrogen as a Carrier Gas for GC

Hydrogen is the fastest carrier gas (uopt), with an optimum linear velocity of 40cm/sec, and exhibits the flattest Van Deemter profile. Hydrogen’s high uopt (optimal linear velocity) results in the shortest analysis times. Also, the wide range over which high efficiency is obtained makes hydrogen the best carrier gas