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ASTM D2885 Determination of Octane Number of Spark-Ignition Engine Fuels
ASTM D2885 Determination of Octane Number of Spark-Ignition Engine FuelsASTM D2885 Standard Test Method for Determination of Octane Number of Spark-Ignition Engine Fuels by On-Line Direct Comparison Technique4. Summary of Test Method4.1 The delta research (ΔRON) or delta motor (ΔMON) octane number ...
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ASTM D2885 Determination of Octane Number of Spark-Ignition Engine Fuels
ASTM D2885 Determination of Octane Number of Spark-Ignition Engine FuelsASTM D2885 Standard Test Method for Determination of Octane Number of Spark-Ignition Engine Fuels by On-Line Direct Comparison Technique1. Scope1.1 This test method covers the quantitative online determination by direct comparison ...
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ASTM D2008 for Ultraviolet Absorbance and Absorptivity of Petroleum Products
ASTM D2008 for Ultraviolet Absorbance and Absorptivity of Petroleum Products20. Precision and Bias20.1 Precision - The precision for four specific petroleum products are given in A1.7 (for white mineral oil), in A2.5 (for refined petroleum wax), in A3.5 (for USP petrolatum), and in A4.5 (for nonstaining ...
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ASTM D2008 for Ultraviolet Absorbance and Absorptivity of Petroleum Products
ASTM D2008 for Ultraviolet Absorbance and Absorptivity of Petroleum ProductsABSORPTIVITY OF SOLIDS AND LIQUIDS12. Summary of Test Methods12.1 The range of absorptivities for petroleum products can be very wide. Probably most absorptivities of interest would fall in the range from 10(-4) to 10 L/g•cm.12.2 ...
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ASTM D2008 for Ultraviolet Absorbance and Absorptivity of Petroleum Products
ASTM D2008 for Ultraviolet Absorbance and Absorptivity of Petroleum ProductsABSORBANCE OF UNDILUTED LIQUIDS9. Procedure9.1 Fill a 1.0-cm reference cell with water. Make sure the cell windows are clean. Position the cells in the cell compartment of the spectrophotometer and obtain absorbance at the wavelengths ...
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ASTM D2008 for Ultraviolet Absorbance and Absorptivity of Petroleum Products
ASTM D2008 for Ultraviolet Absorbance and Absorptivity of Petroleum Products6. Apparatus6.1 Spectrophotometer, equipped to handle liquid samples in cells having sample path lengths up to 10 cm and capable of measuring absorbance in the spectral region from 220 to 400 nm with a spectral slit width of ...
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ASTM D2008 for Ultraviolet Absorbance and Absorptivity of Petroleum Products
ASTM D2008 for Ultraviolet Absorbance and Absorptivity of Petroleum Products4. Summary of Test Method4.1 The ultraviolet absorbance of a liquid is determined by measuring the absorption spectrum of the undiluted liquid in a cell of known path length under specified conditions.4.2 The ultraviolet absorptivity ...
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ASTM D2008 for Ultraviolet Absorbance and Absorptivity of Petroleum Products
ASTM D2008 for Ultraviolet Absorbance and Absorptivity of Petroleum Products1. Scope1.1 This test method covers the measurement of the ultraviolet absorption of a variety of petroleum products. It covers the absorbance of liquids or the absorptivity of liquids and solids, or both, at wavelengths in the ...
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ASTM D1364 for Water in Volatile Solvents(Karl Fischer Reagent Titration Method)
ASTM D1364 for Water in Volatile Solvents (Karl Fischer Reagent Titration Method)12. Report12.1 For water concentrations below 0.5 %, report all results to 0.001 %. Two determinations which agree within 0.008 %, absolute, are acceptable for averaging (95 % confidence level).13. Precision and Bias13.1 ...
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ASTM D1364 for Water in Volatile Solvents(Karl Fischer Reagent Titration Method)
ASTM D1364 for Water in Volatile Solvents (Karl Fischer Reagent Titration Method)10. Procedure10.1 Introduce 10 to 25 mL of the anhydrous solvent mixture (pyridine-glycol, 1 + 4) into the titration vessel, making sure, if an instrument end point apparatus is used, that the electrodes are covered by this ...
