Fiber Optics Expand the Range of a Direct-Reading Spark Optical Emission Spectrometer

A quartz optical fiber flexible light conductor conveys light from the analytical gap of a vacuum optical emission spectrometer to a secondary monochromator, to extend the range of wavelengths available and enhance the versatility of operation. A simple modification to the spark stand is described. Results are given for the determination of alkali elements in mineral and ash samples. Examples of use of the enhanced versatility are discussed.