Did you know gas chromatography dates back to the early 1900s? Since then, this process has been used by countless scientists and researchers to separate volatile compound mixtures. In order to run a gas chromatography lab properly, you’ll need to get your hands on proper GC supplies.

Let’s explore everything you need to know about what you should include in GC labs.

Gas Generators

These are a key part of any gas chromatography lab. They provide the pressurized gas needed to run the chromatograph, which is essential for separating out your compounds.

A variety of different models are available on the market, so it’s important to choose one that’s compatible with your specific machine. In addition to a gas generator, you’ll also need a pressurized gas cylinder to accompany it. These come in a variety of sizes, so you’ll need to select one based on the amount of gas you anticipate using.

So, make sure to keep this in mind when shopping for a gas generator.

Gas Chromatography Columns

These are the heart of the gas chromatography supply list. A column is filled with a stationary phase, through which the mobile phase (the pressurized gas) flows.

This separation of compounds occurs based on their relative attractions to the two phases. A variety of different column materials are available on the market, so it’s important to select one that’s compatible with your specific machine.

In addition, the column length and internal diameter will also need to be taken into consideration. Deactivated columns are also an essential part of the process. As you might guess from the name, deactivated columns are used to remove active compounds from a sample.

This is done by chemically bonding the compounds to the column material.

Fittings and Tubing

In order to connect all of the gas chromatography components, you’ll need a variety of different fittings and tubing.

This includes items such as unions, connectors, and valves. Again, it’s important to make sure that these components are compatible with your specific machine.

Detectors

Once the compounds have been separated by the column, they need to be detected in order to obtain a reading. The most common type of detector used in gas chromatography is the flame ionization detector (FID).

This detects compounds based on their ability to be ionized by a flame. Other popular detectors include the electron capture detector (ECD) and the photoionization detector (PID).

Each of these has its own advantages and disadvantages, so it’s important to select the one that’s right for your specific application.

Data System

In order to collect and store the data from your gas chromatography experiments, you’ll need a data system. This can be anything from a simple paper and pencil to a sophisticated computer system.

The choice of data system will depend on the specific needs of your lab.

Flow Controller

This is a vital piece of equipment that’s used to control the flow of gas through the chromatograph. A variety of different models are available on the market.

In general, you can expect to pay more for a flow controller with more features.

Pumps

Its main purpose is to pump the mobile phase (pressurized gas) through the column.

As you might guess, using the wrong pumps can cause serious problems with your gas chromatography experiments. In some cases, it can even damage your column.

Autosamplers

Interestingly, many people don’t realize that there’s such a thing as an autosampler for gas chromatography.

This is a device that automatically injects samples into the chromatograph. While not absolutely necessary, an autosampler can be a valuable addition to any gas chromatography lab.

It can save you a lot of time and effort, particularly if you’re running a large number of samples. This extra time can then be reinvested in other areas of your research.

Inlet Liners

An inlet liner is a small piece of tubing that’s inserted into the inlet of the gas chromatograph. Its purpose is to protect the inlet from contamination by the sample.

You’ll want to choose one that’s made from high-quality materials to get the best results.

Ferrules

In order to properly connect the inlet liner to the rest of the chromatograph, you’ll need a ferrule. This is a small metal ring that’s placed over the inlet liner.

It provides a tight seal that prevents the sample from leaking out.

Column Oven

In order to properly operate a gas chromatograph, you’ll need a column oven. This is a device that controls the temperature of the column.

Even a small deviation in temperature can cause serious problems with your experiments, so it’s important to choose an oven that’s right for your specific machine.

Thermocouple

This is a device that’s used to measure the temperature of the column oven. As such, it’s one of the most integral pieces of GC equipment.

A quality thermocouple will have a very low error rate, so be sure to keep an eye out for this attribute.

Deionized Water

This is water that’s been treated to remove all of the impurities. Even a small amount of impurity can cause problems with your gas chromatography experiments. Although this is the simplest item on this list, it’s one of the most crucial.

It’s essential to use the right GC vials for your deionized water, as well. This will help ensure you store it appropriately.

Getting Supplies For GC Labs Is Easier Than You Think

As you can see, there’s a lot to consider when putting together a gas chromatography lab. With the right supplies, you’ll be well on your way to success.

Looking for other useful info that can help you out in the future? Be sure to check out the rest of our blog!