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On What Basis Do You Need To Choose Capillary GC Columns?

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Quadrex Corp
On What Basis Do You Need To Choose Capillary GC Columns?

A column is a major component of a Gas Chromatograph in which the separation of sample components takes place. As compared to the packed ones capillary options are always better. A Capillary GC Columns is a very popular type. It comes with a stationary phase which is coated on the inner surface and columns are preferred over the packed variants. For a chromatography process, the columns require a smaller amount of sample. The size of the column comes with a diameter.


The columns are further divided into two main parts:


·        WCOT


WCOT stands for Wall-Coated Open tubular columns and also comes with a stationary phase which is coated inside the walls.


·        SCOT


SCOT stands for Support- Coated Open Tubular Columns and doesn't include a direct coating of stationary phase on the walls. On the walls of the column, there is a support material and the stationary phase gets absorbed by the material.

In comparison with the WCOT, the support material in SCOT will decrease its efficiency. The capillary column will maintain a low pressure inside them.


On what basis do you need to choose GC columns?


Everyone needs to understand the basic difference between a capillary column and a packed column and for that compare them conveniently.


·        Sample Size


There is no need for large sample injections as detectors come with high sensitivity. So in that case choose the capillary columns.


·        Cost


The resolution efficiency is lower in the capillary column and the column bleed is larger.


·        Resolution Power


Leading to the desired separation between closely spaced peaks capillary columns provide much better resolution.

·        Time-Saving


The capillary columns help to increase laboratory throughput and have the ability to resolve components. It can increase the number of samples that can be analyzed at the same time.


·        Sample Polarity


Packed columns are made of stainless steel and are used for the separation of non-polar compounds but glass columns are suitable for polar compound separations.


·        Ruggedness


The chromatographer requires the desired features which are offered by the capillary columns.


The main specifications of Capillary GC Columns are:


·        Stationary phase polarity

·        Temperature Range

·        Column Length

·        Column ID

·        Film thickness

·        Recommended Applications


Conclusion


A column is considered the heart of the gas chromatography system and is vital to efficient separations and healthy peaks. It came in a range of dimensions, formats, and stationary phases and interpreted what each section means. Due to the high resolution, separation efficiency, and ability to produce much sharper peaks capillary GC columns are the go-to. Capillary column is also known as open tubular columns and has a large layer of stationary phase coated on inner walls. A GC column is a key to finding the right column and is extensively linked for easy navigation and online ordering. If you are interested in Capillary GC Columns then you must visit quadrexcorp as we have the best GC Column Supplier. We provide you with the best services. 

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