Scientist changing the capillary column on a Perkin-Elmer Gas Chromatograph (GC),a computer-controlled instrument used to analyse the chemical composition of mixtures of gaseous & volatile liquid samples. Results are presented as a chromatogram,a print-out of the concentration of components in the mixture plotted against time,which appears as a series of peaks on a chart. The turntable in foreground contains special tubes that contain the various samples,prior to their injection into the GC | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Holmes, James / Thomson Laboratories |
Bildgröße: | 4012 px × 5161 px |
Modell-Rechte: | vorhanden |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |