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The CHROMacademy Essential Guide Webcast:
GC Gas Control and Sample Introduction

Thursday 25th May 2017,
8:00am PST/ 11:00am EST/ 4:00pm BST/ 5:00pm CEST


Get the most out of your GC by understanding how it works. 
This webcast will look at how gases are delivered to the instrument and detector, the importance of gas cleanliness, the effect of different flow modes, and how the most common inlets function.

Presented by John V. Hinshaw (Senior Scientist, Serveron Corporation)

Tony Taylor (Technical Director, Crawford Scientific)

Topics Covered

The importance of GC gases and sample introduction for successful chromatography

  • Ensure your GC gases are fit for purpose
  • Electronic pressure control of gas flows to the inlet, column, and detector
  • Constant pressure and constant flow modes
  • Principles of split, splitless, large volume and headspace sample introduction

Presenter Information »


GC Gas Control and Sample Introduction - Tutorial

This month’s webcast focused on GC gas control and sample introduction.  The CHROMacademy material provided in this month’s tutorial will give you further insight into the practical aspects associated with the components used in a GC instrument to control gas flows and introduce the sample for analysis; such as, gas cleanliness, flow programming, and inlet optimization.

Our Quick guides, CHROMacademy course content, and archived webcasts and tutorials will provide the information required to get the most out of your GC by understanding how it works.

Watch the webcast

eLearning Modules

Gas Supply and Pressure Control

Learn which gases are required for GC, how they are supplied, and what purity they should be.

Gases Required for GC | Quality of Gas Supply | Gas Generators Using Hydrogen in the Lab

Sample Introduction

Make the most of your injections by optimizing the split ratio, learning how to avoid sample discrimination, injecting the correct volume…and much more.

Split Injection | Setting the Split Ratio | Sample Discrimination | Injection Volume


Quick Guides

A Little Bit of Split

Practical GC tips and tricks to help improve your analyses.  The benefits of using a little bit of split, instead of splitless injection, without sacrificing sensitivity for low concentration samples.

A Little Bit of Split »

How to Optimize Key Variables in GC Analysis - Sample Introduction

Tips for optimizing split, splitless, and programed temperature vaporizing sample introduction techniques.

Optimize Sample Introduction »

Crimes Against GC Gas Filters

Are you guilty of any of our most commonly committed ‘crimes’ against GC gas filters?

GC Gas Filters »

The Why, What, and How of Headspace GC

A quick introduction to headspace GC.

Headspace GC »

10 Things You Didn’t Know About Your GC

Gas chromatography (GC) is widely used in variety of application areas, yet rarely is the application or equipment properly optimized.  With nearly 70 years of use since its invention in 1947, much is known about the technique however, there is always room for everyone to sharpen their practice, so we’ve put together 10 of our favorite lesser known facts which we think will have a positive impact on your GC data.

10 Things You Didn’t Know About Your GC »

What GC Operators Need to Know.
Part 1: From Gas Supply and Inlets to Column Selection and Temperature Programming.

During this two part event we will look at the whole GC process from sampling, to injection, separation, and detection. We will provide practical hints and tips for the essential GC parameters in order to make your use of this powerful technique straightforward and successful.

What GC Operators Need to Know »

Everything You Should Know About Headspace GC

If you work with volatile or trace analytes, are involved in the development of GC methods for samples in low volatility sample matrices, work with dirty sample matrices which could cause contamination of your GC system, or simply want to expand your knowledge of GC sampling techniques then this is the webcast for you.  Let the CHROMacademy team teach you how to use and optimize headspace GC to improve your analyte sampling.

Headspace GC »

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John V. Hinshaw
(Senior Scientist,
Serveron Corporation)

John is the GC Department Dean at CHROMacademy. He has been active in the field of chromatography for more than thirty years primarily in gas chromatography engineering and applications. He is currently Senior Scientist at Serveron Corporation where he develops on-line instrumentation. John is the longtime editor of the "GC Connections" column in LC/GC Magazine, and he actively participates in ACS, ASTM International, IEEE, IUPAC, USP, and CIGRÉ.

Tony Taylor
Technical Director
Crawford Scientific

Tony comes from a pharmaceutical background and has many years’ research and development experience in small molecule analysis and bio-analysis using LC, GC and hyphenated MS techniques.

Tony is actively involved in method development within the analytical services laboratory at Hall Analytical – which supplies contract research in Chromatography and Mass Spectrometry. He continues to research in novel separation technologies, chromatographic method development and structural characterization, especially in the areas of Extractable and Leachable analysis and Bio-Chromatography.

Tony is the Technical Director of the CHROMacademy and has spent the past 17 years as a trainer and developing on-line education materials in analytical chemistry techniques.