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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.

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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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    sku: AG125-1334
  10. Agilent Technologies

    GC Column Select FAME 100 x 0.25

    sku: AGCP7420
  11. Thermo Fisher Scientific

    GC Column TRACE TR-5HT 15m, 0.25mm, 0.1µm

    sku: TF260H035P
  12. Agilent Technologies

    GC Column HP-88 60m, 0.25mm id, 0.2µm

    sku: AG112-8867
  13. Agilent Technologies

    GC Column CAM 30m, 0.32mm, 0.50µm

    sku: AG113-2133
  14. Agilent Technologies

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

    sku: AG122-0732LTM
  15. Agilent Technologies

    GC Column DB-1 15m, 0.25mm, 0.25u

    sku: AG122-1012
  16. Agilent Technologies

    GC Column DB-XLB 30m, 0.25mm, 0.25u

    sku: AG122-1232
  17. Agilent Technologies

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

    sku: AG122-1564E
  18. Agilent Technologies

    GC Column DB-17 30m, 0.25mm, 0.25µm

    sku: AG122-1732
  19. Agilent Technologies

    GC Column DB-5MS 15m, 0.25mm, 0.10µm

    sku: AG122-5511
  20. Agilent Technologies

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

    sku: AG122-5532
  21. Agilent Technologies

    GC Column DB-5MS 30m, 0.25mm, 1.00µm

    sku: AG122-5533
  22. Agilent Technologies

    GC Column DB-5MS 30m, 0.25mm, 0.50µm

    sku: AG122-5536
  23. Agilent Technologies

    GC Column DB-WAX 15m, 0.25mm, 0.25µm

    sku: AG122-7012
  24. Agilent Technologies

    GC Column DB-210 15m, 0.32mm, 0.50µm

    sku: AG123-0213
  25. Agilent Technologies

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

    sku: AG123-100ALTM
  26. Agilent Technologies

    GC Column GC,DB-1-25m-.32mm-.12µm(TND)

    sku: AG123-1027
  27. Agilent Technologies

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

    sku: AG123-1334
  28. Agilent Technologies

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

    sku: AG123-5012E
  29. Agilent Technologies

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

    sku: AG123-5532UI
  30. Agilent Technologies

    GC Column DB-5HT 10m, 0.32mm, 0.10µm, LTM

    sku: AG123-5701LTM
  31. Agilent Technologies

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

    sku: AG123-7033E
  32. Agilent Technologies

    GC Column DB-624 15m, 0.53mm, 3.00µm

    sku: AG125-1314
  33. Agilent Technologies

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

    sku: AG19091B-012
  34. Agilent Technologies

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

    sku: AG19091B-015
  35. Agilent Technologies

    GC Column HP-5MS Ultra Inert 15m, 0.25mm, 0.25µm

    sku: AG19091S-431UI
  36. Agilent Technologies

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

    sku: AG19091S-433
  37. Agilent Technologies

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

    sku: AG19091S-433UI
  38. Agilent Technologies

    GC Column CP-Sil 5 CB 50 x 0.53 (5.0)

    sku: AGCP7685
  39. Agilent Technologies

    GC Column CP-Sil 5 CB 25 x 0.15 (2.0)

    sku: AGCP7692
  40. Agilent Technologies

    GC Column CP-Sil 5 CB-MS 15 x 0.25 (1.0) on 5 in

    sku: AGCP7812I5
  41. Agilent Technologies

    GC Column VF-35ms 30 x 0.32 (0.25)

    sku: AGCP8882
  42. Macherey-Nagel

    GC Capillary Column OPTIMA-5 AM, 0,25 ID, 0,5 µm, 30 m

    sku: MN726354.30
  43. Thermo Fisher Scientific

    TG-BOND Alumina (Na2SO4 Deactivation) 50m x 0.53mm x 10µ

    sku: TF26001-6110
  44. Thermo Fisher Scientific

    TG-BOND Alumina (KCl Deactivation) 50m x 0.32mm x 5µ

    sku: TF26002-6050
  45. Thermo Fisher Scientific

    TG-BOND Alumina (KCl Deactivation) 50m x 0.53mm x 10µ

    sku: TF26002-6110
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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

The polarity oft he stationary phase is chosen according to the compounds to analyze. 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.

Non polar phases separate compounds by their boiling points. For example, if the components have different boiling points (greater than 2°C), a non-polar column such as the TG-1MS or DB-1 / DB-5 is recommended.

Intermediate polarity phases such as DB-WAX or DB-1701, combine boiling point with the more selective hydrogen bridge or dipolar moment interactions and thus provide a higher selectivity.

If the products differ primarily in their polarities, then a polar column such as the TG-WaxMS will be ideal.

In general, non polar phases are more thermally stable than the polar phases. In other words, the higher the column polarity, the lower ist thermal stability. Hence, 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. The internal diameter (ID) of a column is inversely proportional to ist separation power. 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.

For samples containing a large number of substances where you may need a high resolution, small internal diameter columns (0.20-0.25 mm) are recommended. For samples with a high range of concentrations wider columns should be used since these larger diameters allow fort he injection of a higher sample amount.
Columns of 0.53 mm ID (semicapillary) have a loading capacity similar to that of packed columns, but with better resolution, improved chemical inertness and lower analysis times.

The 0.32-0.53 mm ID columns can be used with either a standard injector (that is used for capillary columns) or with a packed column injector, as they can operate at high flow rates. For GC-MS systems it is recommended to work with small ID columns (0.10 mm, 0.15 mm, 0.18 mm, 0.20 mm, and 0.22 mm) so as not to exceed the capacity oft he MS vacuum system.

Capillary columns of 0.1 mm ID can generate high plates numbers and reduce analysis time without losing resolution. The high efficiency of these columns (7000-10,000 plates/meter) allows the resolution of complex samples using shorter column lengths. However their loading capacity is a limiting factorr and in order to obtain the best performance from these columns instrumental factors (injector/detector) have to be taken into account.

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. As a general rule, thin films (0.1 µm) must be used for compounds with a high molecular weight such as rilycerides, antioxitants etc., which have elution temperatures over 300 °C. 

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.

A film thickness of 0.25-0.32 µm ist he standard thickness allowing for a compromise between capacity and resolution; and fort he injection of samples with a wide volatility range.

Thick films increase retention of the most volatile components whereas thin films provide faster elution at lower temperatures. Thick films must be used for low boiling substances. Specifically, 3-5 µm films are used to separate solvents, gases, and very volatile substances at room temperature or lower. When the thickness oft he stationary phase increases, thermal stability decreases. Therefore the bleed level is higher and this can limit the maximum operating temperature oft he column.

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. This provides a high efficiency with relatively shot analysis times. 
  • 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.