Astm D974

Astm d974Astm d974

It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. It represents the linear oxidation of the base oil. American Industrial Hygiene Assn. This test is used on new oils and oils that are not excessively dark. Dunedin Academic Press Ltd.

Additive depletion, contamination and oxidation are common pathways of lubricant degradation. Link to Active This link will always route to the current Active version of the standard. The colorimetric method uses paranaphthol-benzene, space music mp3 which responds to a change in the pH indicator that has been added to the solution. Item is contained in these product bundles.

In fact, some additives are amphoteric, meaning they can behave as either a base or an acid. The apparent pH is a representation of how corrosive the oil may be, but it does not indicate the concentration of acidic or alkaline constituents.

A Comprehensive Look At the Acid Number Test

International Organization for Standardization. We provide our clients with independent testing. Other Historical Standards. Click here to download full list of books.

It is also valuable in lubricant systems with a high potential for the formation or the contamination of strong acids. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Best Ways to Measure Air in Oil. Once the color has changed, the user only can read the acid number from the burette. Electrostatics and Varnish, Now with IoT. Addison-Wesley Publishing Co.

Create your own user feedback survey. Manage society memberships. The acid concentration of the lubricant contains both strong and weak components.

Astm d974

No general correlation is known between acid number and the corrosive tendency of oils toward metals. Historical Version s - view previous versions of standard. For example, a lab may automate the test to reduce labor and increase throughput. Telecommunications Standards. What are the advantages and disadvantages of each test reproducibility, repeatability, etc.

To prepare the sample a mixture of toluene, isopropyl alcohol and water is dissolved into a sample. Toggle navigation Toggle search. Don't switch back and forth between labs. Site License Subscription.

Detail Summary View all details. By trending results from one specific test method, additive depletion and contamination can be detected. International Electrotechnical Commission. No general relationship between bearing corrosion and acid or base numbers is known.

Dos and Don'ts of Comparing Results Comparing results between samples can become complicated if proper control is not used. Springer-Verlag New York, Inc.

Each test is specific to its application. Potassium hydroxide is then titrated into the solution using a burette. Consider that you received an oil analysis report from multiple labs on the same oil.

For example, one such kit uses a volume-sampling syringe to ensure that the oil samples are the same size. Association Connecting Electronics Industries. Northern Marianas Islands. Telecommunications Industry Association.

The following editions for this book are also available

Standards Australia International, Ltd. The output is plotted and analyzed to determine the inflection of the test method. Aerospace Industries Association. Comparing results from different labs would result in values all over the board. British Standards Institution.