The gas chromatograph utilizes a capillary column which depends on the column 's dimensions ( length , diameter , film thickness ) as well as the phase properties ( e.g. 5 % phenyl polysiloxane ) .
The gas chromatograph uses a capillary column which depends on the column 's dimensions ( length , diameter , film thickness ) as well as the phase properties ( e.g. 5 % phenyl polysiloxane ) .