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ASTM D2272 for oxidation stability of steam turbine oils
Determine oxidation stability of steam turbine oils by rotating pressure vessel8. Preparation of Apparatus8.1 Catalyst Preparation - Before use, polish approximately 3 m of the copper wire with a silicon carbide abrasive cloth and wipe free from abrasives with a clean, dry cloth. Wind the wire into a ...
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ASTM D2272 for oxidation stability of steam turbine oils
Determine oxidation stability of steam turbine oils by rotating pressure vesselMethod A5. Apparatus5.1 Method A, Liquid Bath RPVOT - Oxidation Vessel, Glass Sample Container with Four-Hole PTFE Disk, Hold-Down Spring, Catalyst-Coil, Pressure Gauge, Thermometer, and Test Bath as described in Annex A1. ...
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ASTM D2272 for oxidation stability of steam turbine oils
Determine oxidation stability of steam turbine oils by rotating pressure vessel1. Scope1.1 This test method utilizes an oxygen-pressured vessel to evaluate the oxidation stability of new and in-service turbine oils having the same composition (base stock and additives) in the presence of water and a ...
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ASTM D6470 - homogenization efficiency of unknonw mixer
A1.1 The homogenization efficiency of each unknown mixer must be evaluated before use. To evaluate the mixer, confirm that the expected water content can be obtained by the Karl Fischer titration, following the addition of a known amount of water to a nominally dry crude and the homogenization of this ...
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ASTM D6470 for salt in crude oils (Potentiometric method)
12. Precision and Bias12.1 Precision - The precision of this test method as determined by a statistical examination of interlaboratory test results is as follows:12.1.1 Repeatability - The difference between successive results obtained by the same operator with the same apparatus under constant operating ...
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ASTM D6470 for salt in crude oils (Potentiometric method)
10. Calculation10.1 Calculate the amount of chloride present in the aqueous solution, in µmol, by means of the following equation: where:A = amount of chloride found in the aliquot of the aqueous extract (see 10.1), µmol,P = proportional part of extract used in analysis; P = 50/158 for ethanol and ...
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ASTM D6470 for salt in crude oils (Potentiometric method)
9. Procedure9.1 Extraction9.1.1 Weigh about 40 g of sample, to the nearest 0.1 g, into a 250 mL beaker and heat on a water bath or in an oven to 65 more or less 5°C. Heat 40 more or less 1 mL of xylene to the same temperature and add slowly to the sample while stirring constantly until dissolution is ...
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ASTM D6470 for salt in crude oils (Potentiometric method)
7. Sampling and Sample Preparation7.1 Sampling is defined as all the steps required to obtain an aliquot representative of the contents of any pipe, tank, or other system, and to place the sample into the laboratory sample container. The laboratory sample container and sample volume shall be of sufficient ...
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ASTM D6470 for salt in crude oils (Potentiometric method)
6. Reagents and Materials6.1 Purity of Reagents - Unless otherwise indicated, it is intended that all reagents shall conform to the specifications of the Committee on Analytical Reagents of the American Chemical Society where such specifications are available.6.2 Purity of Water - For all purposes where ...
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ASTM D6470 for salt in crude oils (Potentiometric method)
3. Summary of Test Method3.1 After homogenizing the crude oil with a mixer, a weighed aliquot is dissolved in xylene at 65°C and extracted with specified volumes of alcohol, acetone, and water in an electrically heated extraction apparatus. A portion of the aqueous extract is analyzed for total halides ...
