The Cooperative Standardization of Spectrographic Emulsion Contrast Factors

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Some time ago, several members of the ASTM Committee on Spectrographic Analysis examined an experimental emulsion produced by the Eastman Kodak Co. to test its suitability for use in spectrochemical analysis. The reports agreed well on the three characteristics tested: graininess, speed, and uniformity of contrast with respect to wave-length. Although general adoption of the emulsion was not recommended, the way was opened for similar cooperative efforts in the future. This raised the prospect that Committee members and others might some day be asked to determine the contrast of a new — or old — emulsion at specified wave-lengths, under specified operating conditions.

Document Type: Research Article


Affiliations: Oak Ridge National Laboratory, Oak Ridge, Tennessee

Publication date: February 1, 1952

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