Research shows that the global gas chromatography market size will reach $15.3 billion by 2030. The industry will grow significantly due to increased research studies in different fields.
GC procedures analyze different compositions in a sample. The procedure involves dissolving and separating samples between the stationary and mobile phases.
For a successful procedure, you should use the most compatible GC vials. This action guarantees accurate and precise results.
Here, we provide you with some of the best practices you can apply to make your GC vials compatible with your test sample.
Select the Correct Closure
The vial closure can either be a GC vial cap or cap liner. Your choice of cap liner must also be compatible with the type of solvent you’re using.
Cap liners have a rubber or silicone material that allows needles to extract the samples. The septa in the cap liners have high mechanical durability and operate at a maximum temperature of, 4000C.
A GC vial crimper has either an aluminum or plastic closure. Most gas chromatography autosamplers use crimp style vials. Visit www.chromtech.com to purchase the most compatible closure.
Choose the Right Column
A column allows the separation of volatile components in the sample. The two main types of columns available are capillary and packed columns.
Interfering with the column parameters can cause a change in the results. The column length, internal diameter, and film thickness affect the efficiency and retention of the sample. These parameters also affect the resolution of the sample.
Use the Right Sample Vial
Test samples are normally put in a vial before analysis in the gas chromatography system. The type of vial used depends on the type of analysis.
If you’re using chromatography autosamplers, ensure that your vial is compatible with the autosampler. Routine samples require a screw cap or crimp cap glass vials for reliable delivery.
Amber-colored glass with a crimp cap or screw cap closure protects light-sensitive samples from damage. For low-volume samples, you need micro inserts to maximize the amount of sample injected.
Consider the Needle Tip Style
The type of needle tip depends on the measure of thickness and the procedure. The tip can be tapered, blunt, sharp, or dome-shaped.
If you’re using an autosampler, use a tapered tip and a sharp tip for manual injections. For large volume injections, use the dome tip needles.
Keep Your Instruments Clean
For accurate and consistent results, you must ensure all the instruments you use aren’t contaminated. You should regularly check your inlet and septum for any contamination.
In case of any contamination, there is normally an increase in noise and a decrease in sensitivity in your detector. The detector should be free from oxygen and water to prevent degradation and contamination.
Tips for Using GC Vials
Your choice of GC vials goes a long way in determining the accuracy of your sample results. Understanding GC practices can result in a more efficient and accurate procedure.
The guide above educates you on some GC practices you can use for qualitative and quantitative analysis of mixtures.
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