No thanks! I would like to know more about CHROMacademy

 Over 3000 E-Learning topics / 5000 Articles & Applications

The CHROMacademy Essential Guide Webcast:
Crimes Against Laboratory Gases

Thursday 15th December 2016,
8:00am PST/ 11:00am EST/ 4:00pm GMT/ 5:00pm CET


Laboratory gas isn’t just for gas chromatography; it is used in a variety of applications from sample preparation through to analyte analysis. This webcast will focus on gases for solvent evaporation, the effect gas purity has on GC, GC-MS, and LC-MS applications, and some less often considered topics such as the impact of background ion-molecule reactions in collision cells and the effect on analytical results.

Presented by

Tony Taylor (Technical Director, Crawford Scientific)

Dr. Dawn Watson (CHROMacademy Technical Expert, Crawford Scientific)

Topics Covered

  • Gas for solvent evaporation
    • How and why solvents are evaporated
    • Why use nitrogen
    • Benefits of nitrogen generators
  • GC gases
    • Gas quality
    • Crimes against gas filters
  • Hydrogen for GC-MS
    • Analyte reactivity
    • Effect on ionization efficiency
    • MS background signal
  • Gases for LC-MS
    • Which gases are used where and what for
    • Impact of purity on CID and MRM experiments


Presenter Information »


Crimes Against Laboratory Gases - Tutorial

This month’s webcast focused on crimes that are committed against laboratory gases. The CHROMacademy material provided in this month’s tutorial will help you avoid common pitfalls no matter what technique you are using gas for.

Our Quick guides, CHROMacademy course content, and archived webcasts and tutorials will highlight the different applications which use gas in the laboratory, consider which gases may be the best for an application, and discuss what can go wrong with laboratory gases.

Watch the webcast

eLearning Modules

Fundamental LC-MS - ESI Instrumentation

The following pages consider the use of gas to prevent cluster formation in LC-MS.

Cluster Ion Sampling | Curtain Gas Systems to Prevent Cluster Ions | Dielectric Capillaries to Prevent Cluster Ions
Collision Induced Dissociation

MS Interpretation - General Interpretation Strategies

These pages consider the different types of MS/MS experiments.

MS/MS Experiments | Product Ion Scanning | Precursor Ion Scanning | Constant Neutral Loss Scanning

GC - 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

Quick Guides

Crimes Against GC Gas Filters

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

Crimes Against GC Gas Filters »

GC-MS Leak Detection

How to check for and fix leaks in a GC-MS.

GC-MS Leak Detection »

Helium to Hydrogen - A Change Would Do You Good

Change is always a scary concept but let us dispel some of the fear associated with changing your helium carrier gas to hydrogen by answering some of the most common questions posed to us.

Helium to Hydrogen »

My GC Detector Flame Won’t Light

Although modern GC systems generally make lighting FID flames a straightforward exercise, if your basic settings aren’t correct you can still get significant problems.

GC Detector Flame »

Nitrogen as a Carrier Gas for Capillary GC

Nitrogen is not considered as a viable carrier gas for capillary GC – however many capillary GC methods would work perfectly well with nitrogen. The long run times and loss of sensitivity typically associated with nitrogen carrier can be easily avoided.

Nitrogen as a Carrier Gas for Capillary GC »

Gas Quality for GC

The quality of carrier gas used in a GC system is of the utmost importance. Gases which contain moisture, oxygen, or contaminants can have a serious detrimental effect on the GC system, GC column, and ultimately chromatographic results. The use of the correct gases for detectors is a must, with the cleanliness of the gas being an important factor. This webcast will discuss all of the important considerations on selecting the correct gas with the correct cleanliness for your GC system and detector. Common problems will also be highlighted in order for GC users to spot them quickly when they occur.

Gas Quality for GC »

The Secrets of Optimizing GC-MS Methods

The definitive guide to optimizing methods for GCMS analysis. In this session we consider the major instrument and method decisions that allow you to get the very best from your analysis.

Optimizing GC-MS Methods »

What LC-MS Operators Need to Know

Learn how to make the most of your LC-MS methods by optimizing key parameters, such, as mobile phase, mass analyzer settings, and API-MS interface parameters.

What LC-MS Operators Need to Know »

loading data
loading data
loading data
loading data
loading data
Home | About UsContact Us | SubscribeTerms and Conditions | Advertise | Privacy Policy |

loading data

loading data

loading data


loading data

loading data


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.

Dr. Dawn Watson, CHROMacademy Technical Expert,
Crawford Scientific

Dawn received her PhD in synthetic inorganic chemistry from the University of Strathclyde, Glasgow.  The focus of her PhD thesis was the synthesis and application of soft scorpionate ligands.  As well as synthetic skills, this work relied on the use of a wide variety of analytical techniques, such as, NMR, mass spectrometry (MS), Raman spectroscopy, infrared spectroscopy (IR), UV-visible spectroscopy, electrochemistry, and thermogravimetric analysis. 

Following her PhD she spent two years as a postdoctoral research fellow at Princeton University studying the reaction kinetics of small molecule oxidation by catalysts based on Cytochrome P450.  In order to monitor these reactions stopped-flow kinetics, NMR, HPLC, GC-MS, and LC-MS techniques were utilized.  Prior to joining the Crawford Scientific and CHROMacademy technical team she worked for Gilson providing sales and support for the entire product range including, HPLC (both analytical and preparative), solid phase extraction, automated liquid handling, mass spec, pipettes, and laboratory consumables.