Examination of Very Small Samples, using Emission Spectrography

E. Martin, in 1963, described a method in which sample is compressed in the tip of a graphite pellet and burnt in the arc of an emission spectrograph. An apparatus produced by Messrs. Research and Industrial Instrument Company, Which produces similar pellets is described here. The results obtained from the use of this apparatus have been found to improve the consistency and strength of the emission spectra of very small samples of paint and other materials. Spectra of fragments of paint weighing 50μg are shown to indicate the consistency of the method.