ASTM D943 PDF

ASTM D Standard Test Method for Oxidation Characteristics of Inhibited Mineral Oils. Oxidation stability baths to meet test method ASTM D Oxidation Bath for ASTM D, IP , ASTM D, ASTM D, IP , ISO , ISO

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Measure the sample temperature by a thermometer positioned in the oxidation cell by a thermometer bracket, as in Fig.

Oxidation Bath for ASTM D, IP , ASTM D, ASTM D, IP , ISO , ISO ,

After all deposits are removed, rinse all glassware with a cleaning reagent. Then withdraw 6 mL of test oil into the syringe, hold the syringe tube vertically for 15 to 20 s to allow water to settle to the bottom of the syringe tube, and adjust the sample size to 3 mL while holding the syringe vertically. Before using, the interior of the new tubing should be rinsed with n-Heptane and blown dry with air.

Test Method D is now available for sludge measurement. The use of a two-stage pressure regulator on tank oxygen is recommended.

Soft copper wire of an equivalent grade may also be used. Insert a stopper in the Luer-Lok? Glassware and catalysts must be ordered separately. NOTE 7—Test results by this method are greatly affected by differences in sampling procedure. It is recognized that there is no ASTM semi-micro method now available for potentiometric titration. This standard has been approved for use by agencies of the Department of Defense. In subsequent operations handle the catalyst wires with clean gloves cotton, rubber, or plastic to prevent contact with the skin.

Adjust the heating bath liquid level so that the tube is immersed in the liquid to a depth of 6 10 mm. The Luer-Lok connector is preferably of elastomeric material, such as poly? See detailed specifications Available accessories Request a quotation More products in this subcategory. 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. As the test proceeds and water evaporates to cause the oil level to fall, sufficient makeup water is added, particularly just before oil samples are taken, to return the oil level to the level marked by the indicator strip.

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If these steels are not available, other equivalent steels may be used, provided they are found to be satisfactory in comparative tests using Test Method D Immediately after withdrawing the? When oxidation is proceeding rapidly in such oils, values much higher than 2.

Methods of test for petroleum and its products.

Rinse thoroughly with tap water until all cleaning solution is removed. D — 02 Methods D and D use a color change to indicate the titration end point. Open tube ends to be ground and? The subcommittee responsible for this method is investigating the application of alternative asfm for evaluation of lubricants using this test apparatus.

The mandrel shown in Fig. Alternatively, temperature—measuring devices of equal or better accuracy may be used.

The temperature of the bath is always higher than the sample temperature due to the cooling effect of the oxygen adtm

Oxidation Bath with Oxflo Controller

Therefore, use the applicable apparatus and techniques described in Practice D To asym this indicator, the lower end of the strip is set at the upper oil level when the test is started.

For dark-colored oils, the use of potentiometric titration such as Test Method D to measure the end point may be advantageous.

This can be accomplished as follows. The thermometer is held in the bracket by two? Immerse the test tube in the heating bath. Add the water using the sampling tube and the mL capacity syringe. Adjust the rate of? When an actual test sample is used, remove the thermometer immediately after temperature measurement is complete. The overall length of the? The test method is also used for testing other oils such as hydraulic oils and circulating oils having a speci?

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The Seta Oxidation Bath is used for quantative analysis of the tendency of oils and fuels to aetm sludge, acids and deposits when exposed to oxygen in the presence of metallic catalysts over extended periods. It should be recognized, however, that correlation between results of this method and the oxidation stability of a lubricant in?

Use of a very soft annealed steel wire may allow use of identical thread diameters for the two wires. Insert the syringe sampling tube through the syringe sampling tube spacer, and into the sampling tube holder, as shown in Fig. For overnight storage less than 24 h the coil may be stored in n-Heptane. To allow for heating of the stem portion of the thermometer above the immersion point in the upper portion of the test cell, subtract 0.

All dimensions are in millimetres inches 1. NOTE 4—As an alternative to using the sampling tube holder and sampling tube aatm, the sampling tube may be secured in position by taping or clamping to the oxygen delivery tube using a suitable adhesive tape or clamp.

The test is considered to start at this point. If the wires are uneven at one end aztm the coil, position the coil so that this end is down. Determination of the oxidation stability of inhibited mineral oils the TOST test. Using this mandrel, the iron wire is wound on a thread of Place the sampling tube holder over the oxygen delivery tube.

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Before use it should be inspected to assure that no corrosion products or contaminating materials are present. Place the condenser over the oxygen delivery tube and test tube. asstm

Standard test method for oxidation characteristics of inhibited mineral oils.

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