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- GC Columns (This Page)
Since the early 1970's, SGE has been recognized as a pioneer in the
development of capillary columns for gas chromatography with an
extensive team of polymer chemists, glass technicians and
chromatography specialists working on new techniques. SGE was the
first to develop and offer several new classes of stationary
phases including the sol-gel range of columns.
Phase | Description | Phase Attribute | Polarity | Operation Temp. |
---|---|---|---|---|
BP1 | 100% Dimethyl polysiloxane | General-purpose column; low bleed | Non-polar | 0.1-1.0um -60C to 340/360C; 1.5-5.0um -60C to 280/300C |
BPX1 | 100% dimensionally stabilized methylpolysiloxane | Ideal for simulated distillations (e.g. ASTM D2887 in the petroleum industry) | Non-polar | 0.1um film to 430C; 0.9um film to 400C; 2.65um film to 370C |
BPX5 | 5% Phenyl polysilphenylene-siloxane | Ideal for GC-MS, ECD; Ultra low bleed | Non-polar | -40C to 360/370C |
BP5 | 5% Phenyl 95% Dimethyl polysiloxane | General purpose column; Low bleed | Non-polar | 0.25-1.5um 340/350C; >=1.5um 280/300C |
HT5 | 5% Phenyl polysiloxane-carborane | High temperature; Well suited to the petroleum; C5-C120 anaylsis | Non-polar | Polyimide Clad 0.1-1.0um 10C to 380/400C; Aluminum Clad 0.1-0.5um 10C to 460/480C |
HT8 | 8% Phenyl polysiloxane-carborane | Ideal for PCB analysis; Low bleed | Non-polar | 0.1-1.0um -20C to 360/370C |
BP10 | 14% Cyanopropylphenyl | Used in environmental analysis; Low bleed | Moderately polar | -20C to 280/300C |
BPX35 | 35% Phenyl polysilphenylene-siloxane | Ultra low bleed; Ideal for pesticides/herbicides | Moderately polar | 0.1-1.0um 0C to 360/370C |
BPX50 | 50% Phenyl polysilphenylene-siloxane | Ultra low bleed; Ideal for pharmaceuticals | Moderately polar | 0.1-1.0um 0C to 360/370C |
BP20 (WAX) | Polyethylene glycol | Suitable for use in GC-MS systems; alcohols/free acids | Polar | 0.1-<1.0um 20C to 260/280C; >=1.0um 240/260C |
BP21 | Polyethylene glycol (TPA treated) | Bonded FFAP; alcohols/free acids | Polar | 0.1-1.0m 35C to 240/260C |
BPX70 | 70% Cyanopropyl polysilphenylene-siloxane | Optimized for FAME; Low bleed | Highly polar | 0.1-1.0um 50C to 250/260C |
BPX608 | 35% Phenyl polysilphenylene-siloxane | Optimized for separation of EPA 608 Organics Chlorinated Pesticides | Moderately polar | 0C to 360/370C |
BP624 | Cyanopropylphenyl Dimethyl polysiloxane | Optimized for analysis of EPA drinking water target components | Slightly polar | 1.4um - 0C to 230/240C; 1.8um - 0C to 230/240C; 3.0um - 0C to 230/240C |
BP1-PONA | 100% Dimethyl polysiloxane | Optimized for the analysis of gasoline hydrocarbons | Non-polar | -60C to 280/300C |
SolGel-1ms™ | 100% Dimethyl polysiloxane in a Sol-Gel matrix | High temperature inert GC-MS column | Non-polar | 0C to 380C |
SolGel-WAX™ | Polyethylene glycol in a Sol-Gel matrix | High temperature inert column Ideal for GC-MS | Polar | 30C to 300C |
CYDEX-B | Permethylated Beta-cyclodextrin in OV1701 | Chiral separations | --- | 30C to 220/240C |
Column Selection
Stationary Phase
- Choose the least polar phase that will perform the separation you require.
- Choose SOLGEL-WAX™ to separate compounds such as alcohols, ketones, aldehydes and esters.
- The 5% phenyl columns (BPX5) can be used in 90% of all separations.
Effect of stationary phase. BTEX analysis on two phases of columns.
30m x 0.25mm ID x 0.25um film (SGE).
Internal Diameter
- The smaller the diameter, the faster the analysis.
- 0.25mm ID columns are suitable for most applications, especially GC-MS.
Effect of internal diameter. Polynuclear Aromatic Hydrocarbon (PAH)
analysis (SGE).
Film Thickness
- 0.25um films are standard.
- Use >= 0.5um films for volatile compounds.
- Thicker film columns will result in longer run times but better resolution.
Effect of film thickness (SGE).
Length
- Doubling the column length improves resolution by 40%.
- 30 meter columns are standard.
- Choose short columns for active compounds.
Effect of length (SGE).