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ASTM D189 for Conradson carbon residue of petroleum products
9. Procedure for Residues Exceeding 5 %9.1 This procedure is applicable to such materials as heavy crude oils, residuums, heavy fuel oils, and heavy gas oils.9.2 When the carbon residue as obtained by the procedure described in Section 8 (using a 10-g sample) is in excess of 5 %, difficulties can be ...
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ASTM D189 for Conradson carbon residue of petroleum products
8. Procedure8.1 Shake thoroughly the sample to be tested, first heating to 50° more or less 10°C for 0.5 h when necessary to reduce its viscosity. Immediately following the heating and shaking, filter test portion through a 100 mesh screen. Weigh to the nearest 5 mg a 10-g sample of the oil to be tested, ...
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ASTM D189 for Conradson carbon residue of petroleum products
6. Apparatus (see Fig. 1)6.1 Porcelain Crucible, wide form, glazed throughout, or a silica crucible; 29- to 31-mL capacity, 46 to 49 mm in rim diameter.6.2 Iron Crucible - Skidmore iron crucible, flanged and ringed, 65- to 82-mL capacity, 53 to 57 mm inside and 60- to 67-mm outside diameter of flange, ...
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ASTM D189 for Conradson carbon residue of petroleum products
4. Summary of Test Method4.1 A weighed quantity of sample is placed in a crucible and subjected to destructive distillation. The residue undergoes cracking and coking reactions during a fixed period of severe heating. At the end of the specified heating period, the test crucible containing the carbonaceous ...
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ASTM D189 for Conradson carbon residue of petroleum products
1. Scope1.1 This test method covers the determination of the amount of carbon residue (Note 1) left after evaporation and pyrolysis of an oil, and is intended to provide some indication of relative coke-forming propensities. This test method is generally applicable to relatively nonvolatile petroleum ...
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ASTM D1401 for water separability of petroleum oils and synthetic fluids
11. Precision and Bias11.1 Precision - An interlaboratory study performed in 2008 by 13 laboratories (9 using glass baths and 4 using metal baths). At 54°C, the following samples were included: Turbine Oil, Mineral Turbine Oil ISO 32, 150 N Base oil (in duplicate), Mineral Circulating Oil ISO 32, Synthetic ...
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ASTM D1401 for water separability of petroleum oils and synthetic fluids
10. Report10.1 Record Measurements at 5-min Intervals - Report the following information:(1) Type of water used.(2) Test temperature.(3) Time, in minutes, to reach 3 mL or less of emulsion.(4) Time, in minutes, to reach 37 mL of water.(5) Time, in minutes, to reach a complete break of 0 mL emulsion, ...
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ASTM D1401 for water separability of petroleum oils and synthetic fluids
7. Sampling7.1 The test is very sensitive to small amounts of contamination. Take samples in accordance with Practice D 4057.8. Preparation of Apparatus8.1 Clean the graduated cylinder by removing any film of oil (or fluid) with a thorough rinsing with toluene or solvent with similar cleaning and solvency ...
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ASTM D1401 for water separability of petroleum oils and synthetic fluids
5. Apparatus5.1 Cylinder, 100-mL, graduated from 5 to 100 mL in 1.0-mL divisions, made of glass, heat-resistant glass, like borosilicate glass, or a chemical equivalent. The inside diameter shall be no less than 27 mm and no more than 30 mm throughout its length, measured from the top to a point 6 mm ...
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ASTM D1401 for water separability of petroleum oils and synthetic fluids
3. Summary of Test Method3.1 A test specimen consisting of a 40-mL sample and a 40-mL quantity of distilled water, or 1% sodium chloride (NaCl) solution or synthetic seawater are stirred for 5 min in a graduated cylinder at 54°C or 82°C, depending upon the viscosity of the test specimen or sample specification. ...
