Chris English | Authors

Chris English has managed a team of chemists in Restek’s innovations laboratory since 2004. Before taking the reins of the laboratory, he spent seven years as an environmental chemist and was critical to the development of Restek’s current line of volatile GC columns. Chris holds a B.S. in environmental science from Saint Michael’s College, USA.

Articles

Measuring the Effects of Dirt in the Gas Chromatography System

The impact of contamination on each part of the inlet is examined.

Do Soil Samples Contaminate the Gas Chromatography System?

How physical and chemical characteristics are related to dirt in the GC system.

Do Small Leaks in Your Gas Chromatography System Matter? Part 2

Small leaks may compromise column lifetime, increase maintenance, cause retention time shifts, and decrease sensitivity at elevated temperatures, but do they matter?

Do Small Leaks in Your Gas Chromatography System Matter?

In this instalment of “Practical GC”, air leaks in a gas chromatography (GC) system and their impact on GC stationary phases are examined.

Understanding the Origins of Siloxane Ghost Peaks in Gas Chromatography

Identifying the source of siloxanes makes troubleshooting that much easier.

Expanding Capacity in Gas Chromatography Columns

Since capacity is the maximum amount of sample on column before peak distortion occurs and is directly proportional to column dimensions, this instalment of “Practical GC” will expand our continuing evaluation to include narrow-bore and microbore columns with 0.25 mm, 0.18 mm, and 0.10 mm column internal diameters.