Gas Chromatograph Mass Spectrometer

An MS is an instrument to precisely measure the mass (weight) of each chemical compound contained in a substance, and to identify each compound and its quantity from the weight. The basic principle of MS utilizes the nature of ions. By accelerating an ion (an atom or molecule with an electrical charge) to a certain speed, and passing it through a magnetic field, the path of the ion will be deflected by the magnetic field.