Archive for the ‘New GC Columns’ Category

Molecular Sieve 5A & 13X packed columns – Installation / Conditioning / Helpful Hints

Molecular Sieve 5A & 13X Columns (packed) Molecular Sieve 5A & 13X (micropacked) Things to Consider Before Ordering a Packed Column . Following the steps below will ensure that your Molecular Sieve packed column is ready to use just several hours after installation.  You should only use dry (moisture-free) & hydrocarbon-free high-purity Nitrogen as the carrier gas […]

Molecular Sieve Packed Columns and Fixed (Permanent) Gas Analysis

For some reason, I find molecular sieve packed columns interesting.  Maybe it’s because they have a niche as the go-to columns for fixed (permanent) gas analysis.  Maybe it’s because they are old school technology that a new generation of analysts are always asking questions about.  Maybe it’s because using them successfully is a function of […]

PAHs in PrAHa (PrAgue, CzecH Republic) at RAFA

I must have been thinking about my Rxi-PAH GC column lecture at the Recent Advances in Food Analysis meeting as I strolled around Prague taking in some of the sights, including the beautiful St Vitus Cathedral shown in my first photo below, because I looked down at the floor tiles and saw PAHs.  I then […]

“How Long Will a GC Column Last?”

Once of the most common questions in technical support is “how long will my GC column last” or perhaps “what is a typical lifetime for a GC column.” Unfortunately, these are very difficult questions for which there are no definitive answers. Why? Because column lifetime always depends on a wide range of variables such as… […]

What makes your column a good High Temperature GC column?

In the last few years, the request for HT-columns (High temperature GC columns) has increased and a lot of promises have been made from different vendors. In fact, the possibility of running a GC column near or above 400°C would increase the possibilities of the GC technique quite significantly. In the petroleum industry, for example, […]

Do you measure the length of your GC column?

When purchasing a GC column the length that you buy isn’t necessarily the exact length that you get.  In fact, it is typical that you will receive 0.5 to 1.0 meter more than what you bought!  Knowing the exact length of your column and inputting the correct value into the GC instrument software is important […]

QuEChERS 3 part series…almost

OK…so only the first two articles are done but I just finished the third article and it will be published in Separation Science in August. This series was interesting to write because I was able to spend time focusing both on QuEChERS fundamentals and exploring the evolution of this approach. The official methods and method […]

GC capillary tubing – things you may not know

The other day a customer asked me about our GC capillary tubing specifications, and was surprised to learn that the outside diameter (OD) of both 0.25 mm and 0.32 mm internal diameter (ID) MXT tubing is almost the same (0.41 mm & 0.44 mm), while our 0.28 mm ID MXT tubing has a larger OD of […]

Dr George Frame speaks at Restek on Comprehensive Quantitative Congener Specific (CQCS) polychlorinated biphenyl (PCB) analysis

We were lucky to have Dr George Frame, PCB Analyst Emeritus as I call him, speak at Restek on the GC of PCBs prior to his plenary lecture at the International Network of Environmental Forensics meeting at The Pennsylvania State University last week.  While working as Chief of PCB Analytical R&D at GE Central Research Labs in […]

Can’t find the GC column you are looking for? Try using our Online Tools

So you just spent the last 15 minutes looking on the Restek website and just can’t seem to find exactly what you need. In this post, I will show you which Online Tools are available to help you find a GC column quickly and easily.         GC Capillary Columns (WCOT* & PLOT**): […]