Features:
1. Packing characteristics
Porous Divinylbenzene: The packing of GDX column is Porous Divinylbenzene (PDB), which has large specific surface area and uniform pore size distribution.
Adsorption selectivity: It has strong adsorption capacity for small molecule gases such as C₁-C₂ hydrocarbons (e.g., methane, ethane), CO, CO₂, etc., and weak adsorption for large molecule gases (e.g., hydrocarbons above C₃).
2. Applicable analytical objects
Gas samples: such as hydrocarbon components (C₁-C₂) and inorganic gases (CO, CO₂) in natural gas, refinery gas, mine gas.
Volatile Organic Compounds (VOCs): e.g. low molecular weight VOCs in indoor air, industrial exhaust gases.
3. Selective advantage
Can effectively separate methane (CH₄) from ethane (C₂H₆).
The separation of CO and CO₂ is better than molecular sieve column.
4. Stability and lifetime
Chemical inertness: the packing is chemically stable, acid and alkali corrosion resistant, suitable for complex sample analysis.
Thermal stability: it can be used at higher temperatures (usually ≤200℃) and is not easy to be lost or decomposed.
Long life: under standardized operation, the column is stable and has a long life.
5. Compatibility
Instrument compatibility: It is suitable for all kinds of gas chromatographs (e.g. Shimadzu, Agilent, Thermo Fisher, etc.), with strong versatility.
Product Parameters：
| Chromatographic columns | Material | external diameter | Length |
| GDX series, glass microspheres, 13X, 5A TDX-01, rocky desertification carbon black and other molecules, porous polymers such as HayeSep, Porapak, alumina and other series. | Stainless Steel | 1/16in、1/8in、2mm、3mm、4mm、6mm | 0.25m-10m |
| Passivated stainless steel | 1/8in | 0.25m-10m |
| Polytetrafluoroethylene | 1/8in、3mm、4mm、6mm | 0.25m-10m |
| Glass | 1/48in、5mm、6mm | 1m-5m |
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