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" ... sour." If the sample remains unchanged in color, and if the sulphur film is bright yellow or only slightly discolored with gray or flecked with black, the test shall be reported negative and the sample considered "sweet. "
The Bessemer Manual of Gasoline Recovery by the Compression Method - Page 96
by Ralph Taylor Zook - 1920 - 155 pages
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Year Book of the Oil, Paint, and Drug Reporter

Chemical industry - 1919 - 344 pages
..."doctor solution." (c) Interpretation of Results. — If the gasoline Is discolored, or If the sulfur Him Is so dark that Its yellow color Is noticeably masked,...If the liquid remains unchanged in color and if the sulfur film is bright yellow or only slightly discolored with gray or fl'.cked with black the test...
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airplane, airships, aircraft engines

lieut. albert tucker, (cc) - 1921 - 478 pages
...practically all of the sulphur floats on the surface separating the gasoline from the "doctor solution." condemned as "sour." If the liquid remains unchanged...bright yellow or only slightly discolored with gray or necked with black the test shall be reported negative and the gasoline considered "sweet." (d) Corrosion...
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New and Revised Tag Manual for Inspectors of Petroleum

Robert Mason Wilhelm - Oil inspection - 1923 - 120 pages
...is noticeably masked. Report the test as negative and consider the sample as "sweet," if the sample remains unchanged in color, and if the sulphur film...slightly discolored with gray or flecked with black. TEST NO. 19— SULFUR IN NAPHTHA AND ILLUMINATING OILS Instrument: TAG-ASTM Sulfur Determination Apparatus...
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Motor Fuels: Their Production and Technology

Eugene Hendricks Leslie - Fuel - 1923 - 700 pages
...INTERPRETATION OF RESULTS. "If the sample is discolored, or if the yellow color of the sulfur film is noticeably masked, the test shall be reported as positive and the sample condemned as 'sour.' If the sample remains unchanged in color, and if the sulfur film is bright...
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Natural Gasoline: Testing, Manufacturing and Properties

George G. Oberfell, R. C. Alden - Gasoline - 1924 - 568 pages
...solution. Interpretation of Results If the sample is discolored, or if the yellow color of the sulphur film is noticeably masked, the test shall be reported as positive and the sample condemned as "sour." If the sample remains unchanged in color, and if the sulphur film is bright...
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Standard Methods of Chemical Analysis: A Manual of Analytical ..., Volume 2

Wilfred Welday Scott - Analytical chemistry - 1925 - 1018 pages
...solution. INTERPRETATION OF RESULTS If the sample is discolored, or if the yellow color of the sulphur film is noticeably masked, the test shall be reported as positive and the sample condemned as " sour." If the sample remains unchanged in color, and if the sulphur film is bright...
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Commercial Standard

United States. National Bureau of Standards - Standardization - 1929 - 1868 pages
...solution. INTERPRETATION OF RESULTS If the sample is discolored, or if the yellow color of the sulphur film is noticeably masked, the test shall be reported as positive and the sample condemned as "sour." If the sample remains unchanged in color, and if the sulphur film is bright...
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NBS Special Publication, Issue 110

Weights and measures - 1930 - 722 pages
...solution. Interpretation of Retulu If the sample is discolored, or if the yellow color of the sulphur film is noticeably masked, the test shall be reported as positive and the sample condemned as "sour." If the sample remains unchanged in color, and if the sulphur film is bright...
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Standards and Specifications for Nonmetalic Minerals and Their Products ...

John Quayle Cannon, Addams Stratton McAllister - Mineral industries - 1930 - 706 pages
...solution. Interpretation of Results If the sample is discolored, or if the yellow color of the sulphur film is noticeably masked, the test shall be reported as positive and the sample condemned as "sour." If the sample remains unchanged in color, and if the sulphur film is bright...
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