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Find and compare GC Columns with the GC Column Configurator

Use our GC Column Configurator to find the right Gas Chromatography column among more than 10,000 capillary GC columns available from all top manufacturers such as Agilent, Restek, Macherey Nagel, SGE, Thermo Scientific, etc. By using the drop-down menu on the left, you can easily select the USP specification, column description, column diameter, length and film thickness as well as the preferred manufacturer. 

Altmann Analytik GC Columns of our own brand are a high quality and cost-effective alternative. With a range of more than 5,000 GC Columns, these GC columns are available in numerous dimensions suitable for general-purpose and application-specific solutions.

Here you find more information on GC column selection.

Click here for more chomatography products and other chromatography supplies.

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GC Column Configurator

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  1. Agilent Technologies

    GC Column HP-5 30m, 0.32mm, 0.25µm

    sku: AG19091J-413
  2. Altmann Analytik

    Column Storage Cabinet for 5 GC columns

    sku: AAColStoreGC
  3. Altmann Analytik

    GC Column AS-1, 30 m x 0.53 mm, 3.00 µm

    sku: AAGCS-1-053-300-30
  4. Altmann Analytik

    GC Column AS-5, 30 m x 0.32 mm, 0.25 µm

    sku: AAGCS-5-032-025-30
  5. Altmann Analytik

    GC Column AS-5, 30 m x 0.53 mm, 5.00 µm

    sku: AAGCS-5-053-500-30
  6. Altmann Analytik

    GC Column AS-624, 30 m x 0.32 mm, 1.80 µm

    sku: AAGCC-624-032-180-30
  7. Altmann Analytik

    GC Column AS-624, 30 m x 0.53 mm, 3.00 µm

    sku: AAGCC-624-053-300-30
  8. Altmann Analytik

    GC Column AS-5 MS, 30 m x 0.25 mm, 0.25 µm

    sku: AAGCMS-5-025-025-30
  9. Altmann Analytik

    GC Column AS-624 MS, 30 m x 0.32 mm, 1.80 µm

    sku: AAGCMS-624-032-180-30
  10. Agilent Technologies

    GC Column DB-624 30m, 0.53mm, 3.00µm

    sku: AG125-1334
  11. Agilent Technologies

    GC Column DB-1701 30m, 0.25mm, 0.25µm, LTM

    sku: AG122-0732LTM
  12. Agilent Technologies

    GC Column 5inch cage DB-VRX 60m,.25mm, 1.4u

    sku: AG122-1564E
  13. Agilent Technologies

    GC Column DB-5MS 30m, 0.25mm, 0.25µm

    sku: AG122-5532
  14. Agilent Technologies

    GC Column DB-5MS Ultra Inert 30m, 0.25mm, 1.0µm

    sku: AG122-5533UI
  15. Agilent Technologies

    GC Column DB-15m, 0.32mm, 0.33µm, LTM,5in format

    sku: AG123-100ALTM
  16. Agilent Technologies

    GC Column DB-1 30m, 0.32mm, 3.00µm

    sku: AG123-1034
  17. Agilent Technologies

    GC Column DB-624 30m, 0.32mm, 1.80µm

    sku: AG123-1334
  18. Agilent Technologies

    GC Column 5inch cage, DB-5 15m,.32mm, .25u

    sku: AG123-5012E
  19. Agilent Technologies

    GC Column DB-5MS Ultra Inert 30m, 0,32mm, 0,25µm 

    sku: AG123-5532UI
  20. Agilent Technologies

    GC Column DB-5MS Ultra Inert 30m, 0.32mm, 1.0µm

    sku: AG123-5533UI
  21. Agilent Technologies

    GC Column 5inch cage DB-WAX, 0.32mm x 30m x 0.5µm,

    sku: AG123-7033E
  22. Agilent Technologies

    GC Column DB-1 30m, 0.53mm, 3.00µm

    sku: AG125-1034
  23. Agilent Technologies

    GC Column GC Column DB-WAX 30m, 0.53mm, 1.00µm

    sku: AG125-7032
  24. Agilent Technologies

    GC Column ULTRA-2 25m, 0.32mm, 0.17u

    sku: AG19091B-012
  25. Agilent Technologies

    GC Column ULTRA-2 50m, 0.32mm, 0.17u

    sku: AG19091B-015
  26. Agilent Technologies

    GC Column HP-5MS 30m, 0.25mm, 0.25u

    sku: AG19091S-433
  27. Agilent Technologies

    GC Column HP-5MS Ultra Inert 30m, 0.25mm, 0.25µm

    sku: AG19091S-433UI
  28. Agilent Technologies

    GC Column VF-1ms 15 x 0.25 (0.25)

    sku: AGCP8907
  29. Macherey-Nagel

    Desakt. cap., Methyl-Sil, 0,25 mm ID, 25

    sku: MN723106.25
  30. Macherey-Nagel

    Desakt.cap.,Phenyl-Sil,0,25 mm ID, 10 m

    sku: MN723108.10
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GC column selection

When selecting a GC column for your analysis, it can be difficult to choose the most appropriate column since there is a wide range of options. However, considering a number of questions about the planned separation makes the choice a lot easier. Read the following information to find the most suitable column for your analysis.

Method development considerations

When first developing a method, you should consider these column characteristics to determine the best column for the separation:

1) Column phase
2) Internal diameter
3) Film thickness
4) Column length

1) Column phase

In GC, the separation of two analytes occurs due to differences in their interaction with the stationary phase, therefore a phase must be chosen that matches the properties of the sample. For example, if the components have different boiling points (greater than 2°C), a non-polar column such as the TG-1MS is recommended. If the products differ primarily in their polarities, then a polar column such as the TG-WaxMS will be ideal. Always select the least polar column which will perform the separation.

2) Internal diameter

The choice of inner diameter is often determined by the instrument or detection method. Most modern GC instruments are suitable for most column sizes. With a larger inner diameter, the sample capacity of the column increases, but resolution and sensitivity decrease. Vice versa, a column with a smaller inner diameter can improve resolution and sensitivity, but with the drawback of lower sample capacity and higher sample preparation requirements. It is therefore a good idea to find a similar application that allows separation of the desired components and use this as a guide.

3) Film thickness

The film thickness of the column has an influence on retention, dissolution, column bleed, inertness and capacity. Increasing the film thickness increases the sample capacity of the column and slows down the elution of the peaks, which can be helpful when analyzing volatile compounds. A thicker film also reduces the risk of overloading the column, thus improving the resolution. However, a thicker film may also be more sensitive to degradation. The same component will elute at a higher temperature on a thick film than on a thin film.

Compounds with high boiling points or high molecular weight should be analyzed with a thin film to improve resolution and avoid unnecessarily long analysis times.

Another essential factor is the phase ratio, which can be calculated based on the inner diameter and the film thickness. The phase ratio is considered 1) to characterize the best dimensions for an application and 2) when an analysis is to be transferred from one column with a certain inner diameter to another without changing the method significantly.

4) Column length

A longer column length leads to higher efficiency and resolution, but it is not a linear relationship. The resolution is proportional to the square root of the column length, so doubling the column length increases the resolution by about 40%. However, increasing the column length also increases the retention time. Double column length, double analysis time. In general, it is recommended to use the shortest column with which the desired separation can be performed.

  • Columns with a length of 25 to 30 meters are suitable for the beginning of method development.
  • Columns 10 to 15 meters long are suitable for samples containing very few or easily separable analytes. Shorter columns are used for very small diameters to reduce initial pressure.
  • Columns 50 to 60 meters long should only be used when resolution is not possible by other means (smaller diameter, different stationary phase, temperature change of the column). However, they are ideal for complex samples with many substances. Long columns require a long analysis time and cause higher costs.

Some additional considerations

It is useful to know that 95% of all used GC columns are either TG-1MS, TG-5MS, or TG-WaxMS type columns. A good starting column is a 30m x 0.25mm ID, 5% phenyl column with a film thickness of 0.25μm, such as e.g. the TG-5MS. This is a non-polar column that separates primarily by boiling point, but also has some polar characteristics.