Archive for the ‘New GC Columns’ Category

LPGC – Fast way to your pesticide analysis!

Throughput is one of the most important parameters in the lab. The more samples we can analyze in a day, the sooner we can get home. Enter Low Pressure GC (LPGC) – this is an invention from our brilliant Jaap de Zeeuw [1-2], where a relatively short analytical column (10 – 15 m) with large […]

Hydrocarbon Ranges of Natural Gas and Petroleum Products

Sometimes customers need to analyze natural gas and petroleum products, whether it is to confirm the purity of the product by looking for the impurities which may be present, or for an environmental reason such as a spill or leak.  In order to choose the correct GC column and reference standards, one needs to know […]

Pro EZGC Update: Comprehensive 209 compound Library of Brominated Diphenyl Ethers and a New Column Format

While attending Dioxin 2018 in Krakow, I noticed that several academic researchers were studying  the toxicity of specific PBDE congeners not on the standard target compound list for EPA method 1614 (or the EU equivalent). Though PBDE mixtures have been phased out of production and use, the concentrations in the environment have not been declining […]

How (Not) To Cut Your Capillary Column

There are numerous ways to cut a capillary column. Restek has several tools to accomplish this job. There are sapphire scribes, ceramic scoring wafers, wafers with a handle, and diamond blade column cutters. There are also some tools manufactured by other companies that will cut a capillary column. The choice is typically personal preference. No […]

Cross reference lists for GC columns and other useful links

With everyone in such a hurry these days, when you cannot find what you need in a few minutes, how often do you give up and move onto your next project?   I’m the same way, so when I find a way to group commonly referenced information into one convenient area, I usually do it.  Below […]

Some notes about Fats and Oils, cis/trans-Fatty acids and our latest re-launched RT 2560

I recently posted a Blog regarding some notes about Fats and Oils, FAMES and our Famewax column, which can be found here. In Food Industry the challenge may be a bit heavier, if the amount of Trans Fatty Acids is requested. There is scientific consensus that trans fats intake has a negative effect on human […]

Looking for a quote for a GC custom packed column?

To check to see if we can manufacture a custom packed column, you will need to complete the form found in the link below. If we can manufacture the column, you will automatically receive a quote for it.  If not, customer service will inform you and let you know why. Custom Packed/Micropacked Column Request Form […]

Changing from helium to nitrogen carrier gas in gas chromatography while maintaining separation efficiency and analysis time

In two recent ChromaBLOGraphy posts (see links below) I described the experimental implementation of an idea Jaap de Zeeuw had to use nitrogen carrier gas for GC while maintaining the same separation efficiency and analysis time as what could be achieved by helium carrier gas. Wait, that’s impossible, right?!  Not if you go from a […]

How to make sure your new GC capillary column will fit into your GC oven

I recently spoke to a customer who said she was having a difficult time finding the catalog number of the column she was trying to order. I asked for the catalog number, and she provided 70112-6850. I instantly knew what the problem was, she paired a MXT column catalog number (70112) with a fused-silica column […]

New Restek EU PAH 15+1 Standard Separated on Rxi-PAH GC Column

Many of you may know that Restek recently developed and released a standard to support the determination of certain polycyclic aromatic hydrocarbons (PAHs) in food because they may be genotoxic and carcinogenic to humans.  You can find details on the EFSA Scientific Opinion that lists the so-called 15+1 PAHs here.  Hopefully you also know that […]