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ASTM D721 Standard Test Method for Oil Content of Petroleum Waxes
ASTM D721 Standard Test Method for Oil Content of Petroleum Waxes5. Apparatus5.1 Filter Stick and Assembly, consisting of a 10-mm diameter sintered glass filter stick of 10 to 15 µm maximum pore diameter as determined by the method in Appendix X1, provided with an air pressure inlet tube and delivery ...
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ASTM D721 Standard Test Method for Oil Content of Petroleum Waxes
ASTM D721 Standard Test Method for Oil Content of Petroleum Waxes3. Summary of Test Method3.1 The sample is dissolved in methyl ethyl ketone, the solution cooled to -32°C (-25°F) to precipitate the wax, and filtered. The oil content of the filtrate is determined by evaporating the methyl ethyl ketone ...
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ASTM D721 Standard Test Method for Oil Content of Petroleum Waxes
ASTM D721 Standard Test Method for Oil Content of Petroleum Waxes1. Scope1.1 This test method covers the determination of oil in petroleum waxes having a congealing point of 30°C (86°F) or higher as determined in accordance with Test Method D938, and containing not more than 15 % of oil.1.2 The values ...
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ASTM D6045 Color of Petroleum Products by the Automatic Tristimulus Method
ASTM D6045 Color of Petroleum Products by the Automatic Tristimulus Method11. Report11.1 Report the following information:11.1.1 The color of the sample as either Saybolt color to the nearest whole number or ASTM color according to the following procedure: (1) for results with decimal numerical values ...
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ASTM D6045 Color of Petroleum Products by the Automatic Tristimulus Method
ASTM D6045 Color of Petroleum Products by the Automatic Tristimulus Method10. Procedure10.1 Calibration - Prepare the spectrophotometer or tristimulus filter colorimeter for operation following the manufacturer's instructions.10.1.1 Periodic measurement of suitable Test Method D1500 or Test Method D156, ...
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ASTM D6045 Color of Petroleum Products by the Automatic Tristimulus Method
ASTM D6045 Color of Petroleum Products by the Automatic Tristimulus Method6. Apparatus6.1 Either instrument described in 6.1.1 or 6.1.2 may be used in this test method.6.1.1 Spectrophotometer - The spectrophotometer used in the measurement shall satisfy the following specifications:6.1.1.1 Wavelength ...
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ASTM D6045 Color of Petroleum Products by the Automatic Tristimulus Method
ASTM D6045 Color of Petroleum Products by the Automatic Tristimulus Method4. Summary of Test Method4.1 The sample is poured into the glass sample container, and the container is placed into the light path of the automatic instrument. A transmittance measurement is performed in order to determine the ...
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ASTM D6045 Color of Petroleum Products by the Automatic Tristimulus Method
ASTM D6045 Color of Petroleum Products by the Automatic Tristimulus Method1. Scope1.1 This test method covers the automatic determination of color of a wide variety of petroleum products such as undyed motor and aviation gasoline, aviation turbine fuels, naphthas, kerosine, pharmaceutical white oils, ...
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ASTM D976 Test Methods for Calculated Cetane Index of Distillate Fuels
ASTM D976 Test Methods for Calculated Cetane Index of Distillate Fuels6. Precision6.1 Correlation of index values with ASTM cetane number is dependent to a great extent upon the accuracy of determination of both API gravity and midboiling point.6.2 Within the range from 30 to 60 cetane number, the expected ...
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ASTM D976 Test Methods for Calculated Cetane Index of Distillate Fuels
ASTM D976 Test Methods for Calculated Cetane Index of Distillate Fuels4. Equation for Calculated Cetane Index4.1 The Calculated Cetane Index is determined from the following equation:where:G = API gravity, determined by Test Method D287 or D1298,M = mid-boiling temperature, °F, determined by Test Method ...
