of Petroleum and Petroleum Products (ASTM Practice. D ). MPMS Chapter Determination of Water in Crude Oil by the Distillation Method (ASTM Test. ASTM D Standard Test Method for WATER IN PETROLEUM PRODUCTS AND BITUMINOUS MATERIALS BY DISTILLATION. ASTM D Standard Test Method for Water in Petroleum Products and Bituminous Materials by Distillation.

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A number in parentheses indicates the year of last reapproval. This standard has been approved for use by agencies of the Department of Defense.

NOTE 1—Volatile water-soluble material, if present, may be measured as water. For bituminous emulsions refer to Test Method D The values in parentheses are for information only. It is the responsibility of aetm user of sstm standard to establish appropriate safety and health practices and determine astk applicability of regulatory limitations prior to use.

Current edition approved May 1, Originally approved in Last previous edition approved in as D95— Bangkok pursuant to License Agreement. No further reproductions authorized. D95 — 05 4. Summary of Test Method 4. Condensed solvent and water are continuously separated in a trap, the water settling in the graduated section of the trap and the solvent returning to the still.

Percent may be determined by mass or by volume.

The blank shall be determined to the nearest scale division and used to correct the volume of water in the trap in Section The still, trap, and condenser may be connected by any suitable method that produces a leakproof joint. Preferred connections aastm ground joints for glass and O-rings for metal to glass.

Typical awtm are illustrated in Fig. The stills and traps should be chosen to cover the range of materials and water contents expected. On assembly, care shall be taken to prevent the joints from freezing or sticking. Always apply a very thin?

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Vessels of, and mL nominal capacity have proved satisfactory. A gas ring burner with ports on the inside circumference shall be used with the metal still. The gas ring burner shall be of such dimensions that it may be moved up and down the vessel when testing materials that are likely to foam or solidify in the still. NOTE 3—Instead of standardizing on a particular apparatus speci?

Petroleum distillate Volatile spirits FIG. D95 — 05 the case of Style E; 0.

When complete, discard the contents of the trap and add the volume of water as speci? The assembly of the apparatus is satisfactory only if the trap readings are within the tolerances speci?

Eliminate these factors before awtm the veri? Procedure NOTE 4—The precision of this test method will be affected by water droplets adhering to surfaces in the apparatus and therefore not settling into the water trap to be measured.

ASTM D95 Standard

To minimize the problem, all apparatus must be cleaned chemically at least daily to remove surface? More frequent cleaning is recommended if the nature of samples being run causes persistent contamination. Only representative samples obtained as speci? Thereafter, each major subdivision that is, 2. Rinse the material adhering to the cylinder with one mL and two mL portions of the solvent-carrier liquid see Section 6 and Table 1.

Drain the cylinder thoroughly after the sample transfer and each rinsing. In cases of material with a low-water content when large samples must be used, a solvent-carrier liquid volume in excess of mL may be necessary.

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If a metal still with a removable cover is used, insert a gasket of heavy paper, moistened with solvent, between the still body and the cover. The condenser tube and trap must be chemically clean to ensure free drainage of water into the bottom of the trap. Insert a loose cotton plug in the top of the condenser to prevent condensation of atmospheric moisture inside it. Circulate cold water through the jacket of the condenser. If the metal still is used, start heating with the ring burner about 76 mm 3 in.

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Precision and Bias The precision when using the 2-mL trap or a 5—mL trap has not been established. If there is a persistent ring of water in the condenser tube, carefully increase the rate of distillation or cut off the condenser water for a few minutes.

Dislodge any drops of water adhering to the sides of the trap with a glass or polytetra? Read the volume of the water in the trap to the nearest scale division. D95 — 05 ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

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