SHORT PATH

THERMAL DESORPTION UNIT COMPRISING A TUBE HOLDER, A MASS SPECTROMETER, A MASS SPECTROMETER INTERFACE, A CRYOGENIC TRAP, A CAPILLARY COLUMN, AN INJECTION PORT, A COMPUTER MONITOR AND PRINTER USED FOR DIRECT DESORPTION OF BOTH VOLATILE AND SEMI-VOLATILE SAMPLES INTO THE INJECTION PORT AND COLUMN OF A GAS CHROMATOGRAPH