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ASTM D1401 for water separability of petroleum oils and synthetic fluids
1. Scope1.1 This test method covers measurement of the ability of petroleum oils or synthetic fluids to separate from water. Although developed specifically for steam-turbine oils having viscosities of 28.8–90 mm2/s at 40°C, this test method may be used to test oils of other types having various viscosities ...
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Helpful hints for Coulometric Karl Fischer water analysis
1.1 Following precautions are suggested to obtain accurate and precise results by this test method. Some of these suggestions are also described in the text of the test method, but are compiled here for easy reference.1.1.1 A number of chemicals interfere in this titration: mercaptans, sulfides, amines, ...
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ASTM D6304 for water in petroleum products by Coulometric Karl Fischer Titration
14. Quality Control Checks14.1 Confirm the performance of the instrument or the procedure each day it is in use by analyzing a QC sample that is representative of samples typically analyzed. Quality control frequency should be increased if a large number of samples are routinely analyzed. If the analysis ...
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ASTM D6304 for water in petroleum products by Coulometric Karl Fischer Titration
11. Procedure A (by Mass)11.1 Add newly made solvents to the anode and cathode compartments of the titration vessel and bring the solvent to end-point conditions as described in Section 9.11.2 Add the petroleum product test specimen to the titration vessel using the following method:11.2.1 Starting with ...
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ASTM D6304 for water in petroleum products by Coulometric Karl Fischer Titration
8. Sampling8.1 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 a container for analysis by a laboratory or test facility.8.2 Laboratory Sample - The sample of petroleum product presented ...
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ASTM D6304 for water in petroleum products by Coulometric Karl Fischer Titration
6. Apparatus6.1 Coulometric Karl Fischer Apparatus (using electrometric end point) - A number of automatic coulometric Karl Fischer titration assemblies consisting of titration cell, platinum electrodes, magnetic stirrer, and a control unit are available on the market. Instructions for operation of these ...
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ASTM D6304 for water in petroleum products by Coulometric Karl Fischer Titration
3. Summary of Test Method3.1 An aliquot is injected into the titration vessel of a coulometric Karl Fischer apparatus in which iodine for the Karl Fisher reaction is generated coulometrically at the anode. When all of the water has been titrated, excess iodine is detected by an electrometric end point ...
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ASTM D6304 for water in petroleum products by Coulometric Karl Fischer Titration
1. Scope1.1 This test method covers the direct determination of water in the range of 10 to 25 000 mg/kg entrained water in petroleum products and hydrocarbons using automated instrumentation. This test method also covers the indirect analysis of water thermally removed from samples and swept with dry ...
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ASTM D93 for flash point by Pensky-Martens closed cup tester
Flash point test and flammability of mixturesX2.1 While the flash point can be used to indicate the flammability of liquid materials for certain end uses, flash point does not represent the minimum temperature at which a material can evolve flammable vapors.X2.2 There are instances with pure materials ...
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ASTM D93 for flash point by Pensky-Martens closed cup tester
Flash point masking phenomenonX1.1 A condition during flash point testing can occur with certain mixtures whereby the nonflammable component of the sample tends to inert the vapor space above the liquid, thus preventing a flash. Under this condition, the flash point of the material is masked resulting ...
