GCMS
GCMS is an abbreviation for Gas chromatography-Mass spectrometry, an advanced piece of chemical analytical equipment typically used to characterise complex organic mixtures. The gas chromatography stage separates the mixture into its various constituent parts (i.e. substrate and series of active compounds) which are then then passed off to the mass spectrometer for individual characterisation.
GCMS is also the abbreviation for Greater China Media Services Limited, a division of the Hong Kong based media group Global China Group Holdings Limited.
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