Data obtained in the routine use of a multi-channel x-ray spectrometer are presented to demonstrate precision on stainless steel, nickel and cobalt base alloys as solids, liquids and briquetted powders Coefficients of variation of 0.5% and less for the major constituents in high temperature alloys are readily attainable. The combination of liquid and powder techniques is particularly significant in that it provides an independent method for standardizing complex alloys by use of synthetic standards.

The use of atmospheres for sample excitation has assumed increasing importance in emission spectrochemical analysis. This emphasis has resulted in a study of electrode jet enclosures designed to adapt existing stands for spark excitation. Special configurations of enclosures are required to achieve satisfactory point-to-plane analysis. Data will be presented for high voltage spark and spark-initiated condensed arc discharges and for the conditions required to achieve the “energetic burn” that is essential for improved sensitivity and accuracy in the analysis of steel, lead, and other alloys.

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