Abstract
The tape machine is a device to introduce the sample in powder form into the spark gap. The sample to be analysed is charged on to an adhesive tape which passes through the spark gap at such a speed that every single spark always hits new material. In this way the deviations in intensities obtained from the single sparks during the sparking time are randomly distributed and not systematically influenced by volatility, electrode temperature, etc., so that all the single sparks belong to the same statistical distribution. For this reason the tape machine gives a very high precision.
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