SGE GC Capillary Columns

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
BP225	50% Cyanopropylphenyl	Suitable for sugars analysis	Moderately polar	0.1-1.0m 40C to 230/250C
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).

SGE GC capillary columns are also covered in the following section of our print catalog: SGE Capillary Columns [D2-D7].

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