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ASTM D5443 for Paraffin, Naphthene, and Aromatic Hydrocarbon Type Analysis
ASTM D5443 for Paraffin, Naphthene, and Aromatic Hydrocarbon Type AnalysisASTM D5443 Standard Test Method for Paraffin, Naphthene, and Aromatic Hydrocarbon Type Analysis in Petroleum Distillates Through 200°C by Multi-Dimensional Gas Chromatography3. Summary of Test Method3.1 A representative sample ...
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ASTM D5443 for Paraffin, Naphthene, and Aromatic Hydrocarbon Type Analysis
ASTM D5443 for Paraffin, Naphthene, and Aromatic Hydrocarbon Type AnalysisASTM D5443 Standard Test Method for Paraffin, Naphthene, and Aromatic Hydrocarbon Type Analysis in Petroleum Distillates Through 200°C by Multi-Dimensional Gas Chromatography1. Scope1.1 This test method covers the determination ...
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ASTM D4715 Test Method for Coking Value of Tar and Pitch (Alcan)
ASTM D4715 Test Method for Coking Value of Tar and Pitch (Alcan)12. Report12.1 Report the coking value to the nearest 0.1 mass %.13. Precision and Bias13.1 The following criteria shall be used for judging the acceptability of results (95 % probability).13.1.1 Repeatability - Duplicate values by the same ...
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ASTM D4715 Test Method for Coking Value of Tar and Pitch (Alcan)
ASTM D4715 Test Method for Coking Value of Tar and Pitch (Alcan)10. Procedure10.1 For greater accuracy, carry out the determination in duplicate.10.2 Heat a clean porcelain crucible with its lid in the electric furnace, controlled at 550 more or less 10°C, for 2 h. After cooling to ambient temperature ...
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ASTM D4715 Test Method for Coking Value of Tar and Pitch (Alcan)
ASTM D4715 Test Method for Coking Value of Tar and Pitch (Alcan)7. Bulk Sampling7.1 Samples from shipments shall be taken in accordance with Practice D4296, and shall be free of foreign substances. Thoroughly mix the sample immediately before removing a representative portion for the determination or ...
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ASTM D4715 Test Method for Coking Value of Tar and Pitch (Alcan)
ASTM D4715 Test Method for Coking Value of Tar and Pitch (Alcan)5. Apparatus5.1 Porcelain Crucible, tall form, 30 mL capacity, height of 1 1/2 in. and diameter of 1 3/4 in. (37 mm and diameter 43 mm), with lids of the overlapping type.5.2 Nickel Crucible, 100 to 130 mL capacity, height of 2 1/2 in. and ...
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ASTM D4715 Test Method for Coking Value of Tar and Pitch (Alcan)
ASTM D4715 Test Method for Coking Value of Tar and Pitch (Alcan)3. Summary of Test Method3.1 A test portion of the tar or pitch is heated for a specified time at 1022 more or less 18°F (550 more or less 10°C) in an electric furnace. The percentage of residue is reported as the coking value.4. Significance ...
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ASTM D4715 Test Method for Coking Value of Tar and Pitch (Alcan)
ASTM D4715 Test Method for Coking Value of Tar and Pitch (Alcan)1. Scope1.1 This test method covers the determination of the coking value of tar and pitch having an ash content not over 0.5 %, as determined by Test Method D2415.1.2 Coking values by this test method are higher than those obtained by Test ...
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ASTM D3944 Test Method for Solidification Point of Petroleum Wax
ASTM D3944 Test Method for Solidification Point of Petroleum Wax8. Report8.1 Report the solidification point to the nearest 0.1°C.9. Precision and Bias9.1 The precision of this test method as determined by statistical examination of interlaboratory results is as follows:9.1.1 Repeatability - The difference ...
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ASTM D3944 Test Method for Solidification Point of Petroleum Wax
ASTM D3944 Test Method for Solidification Point of Petroleum Wax7. Procedure7.1 Calibrate the recorder at least every 60 days when in frequent use (see Annex A1).7.2 Obtain a wax sample representative of the material to be tested.7.3 Using a balance accurate to at least 1 mg, weight 50 + 5 mg of sample ...
