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  • INTRINSIC STABILITY OF ASPHALTENE CONTAINING OILS: D7157 INTRINSIC STABILITY OF ASPHALTENE CONTAINING OILS: D7157EXPLANATIONThis test method describes a sensitive method for estimating the intrinsic stability of an oil. The intrinsic stability is expressed as an S-value. An oil with a low S-value is likely to undergo flocculation of asphaltenes when stressed ...
  • DISTILLATE FUEL STORAGE STABILITY: D5304 DISTILLATE FUEL STORAGE STABILITY: D5304EXPLANATIONThis test method covers a procedure for assessing the potential storage stability of middle distillate fuels, both freshly refined or already in storage, and those with or without stabilizer additives. The results of this test method are useful in comparing ...
  • DISTILLATE FUEL STORAGE STABILITY AT 43° C: D4625 DISTILLATE FUEL STORAGE STABILITY AT 43° C: D4625EXPLANATIONFuel oxidation and other degradative reactions leading to sediment (and color) formation are mildly accelerated by the test conditions, compared to typical storage conditions. These test results have been shown to predict storage stability ...
  • STABILITY AND COMPATIBILITY OF HEAVY FUEL OILS AND CRUDE OILS BY OIL STABILITY A STABILITY AND COMPATIBILITY OF HEAVY FUEL OILS AND CRUDE OILS BY OIL STABILITY ANALYZER (OPTICAL DETECTION): D7112EXPLANATIONAutomatic determination of stability parameters using a light back-scattering technique improves accuracy and removes human errors. In manual testing, operators have to visually ...
  • SOLVENT RED DYE 164 IN DIESEL FUELS: D6258 SOLVENT RED DYE 164 IN DIESEL FUELS: D6258EXPLANATIONThis test method was developed to provide for the enforcement of 26 CFR 48.4082-1(b), which mandates that all tax exempt diesel fuels be dyed with an amount of solvent Red 164 at a concentration that is spectrally equivalent to 11.1 mg/L of Solvent ...
  • SOLIDIFICATION POINT OF PETROLEUM WAX: D3944 SOLIDIFICATION POINT OF PETROLEUM WAX: D3944EXPLANATIONSolidification point of petroleum wax is defined as the temperature in the cooling curve of the wax where the slope of the curve first changes significantly as the wax sample changes from a liquid to a solid state. The related methods of determining ...
  • SOFTENING POINT BY METTLER SOFTENING POINT METHOD: D3104 SOFTENING POINT BY METTLER SOFTENING POINT METHOD: D3104TEST SUMMARYThis test method is applicable to the pitches with softening points in the range 50 to 180° C. This test method and Test Method D2319 give comparable results.Pitch is suspended in a cylindrical cup with a 6.35-mm hole in the bottom. ...
  • SOFTENING POINT BY CUBE-IN-AIR METHOD: D2319 SOFTENING POINT BY CUBE-IN-AIR METHOD: D2319TEST SUMMARYThis test method covers the determination of softening point above 176° F 80° C . Test Method D3104 gives comparable results.Two cubes of pitch, supported on wire hooks, are heated in a standardized air oven at a linear rate. The softening point ...
  • SOFTENING POINT BY CUBE-IN-WATER METHOD: D61 SOFTENING POINT BY CUBE-IN-WATER METHOD: D61TEST SUMMARYThis test method covers the determination of the softening point of pitches below 176° F (80° C). Pitches of higher softening point should be tested by Test Methods D2319 or D3104.Two cubes of pitch, supported on wire hooks, are heated at controlled ...
  • SOFTENING POINT BY METTLER CUP-AND-BALL METHOD: D3461 SOFTENING POINT BY METTLER CUP-AND-BALL METHOD: D3461TEST SUMMARYThis test method is applicable in the temperature range 50 to 180° C, and gives results comparable to those obtained by the Test Method D36. The sample is suspended in a cylindrical cup with a 6.5-mm hole in the bottom and with a lead ...