We perform lubricating grease quality testing by ASTM D, which gives several methods for determining and estimating the makeup of lubricating greases. These test methods for analysis cover greases of the conventional type, which consist essentially of petroleum oil and soap. The constituents that can be. ASTM D standard test methods for analysis of lubricating grease. ASH DETERMINATION 7. General The percentage of ash shall not be included in the.

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This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3. The solution, when tested with methyl red Warning – Flammable. Power by seonoco All Rights Reserved: May be harmful if swallowed.

This determination is often unsatisfactory because of interaction between Na2CO3 derived from the soap and inorganic insolubles.

Rinse the watch glass with water into the crucible. Find Similar Items This product falls into the following categories.

It is, however, sometimes required. There is always likelihood of reaction with the porcelain crucible itself on account of the long continued heating necessary to burn off all carbon. No other units of measurement are included in this standard. Contact with organic material may cause fire.

ASTM D standard test methods for analysis of lubricating grease – YONGRUN

NOTE 3 – The determination of the total ash should not in general be regarded as of any great importance. Historical Version s – view previous versions of standard. In some cases, these constituents can react with strong acid or alkaline solutions.


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Zinc is shown by the yellow color of the ash while hot, and lead may be indicated by the presence of metallic globules or by the yellow asm of the ash when cold. 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.

Click to learn more. Alternative Test Method 9.

ASTM D128 – 98(2014)E1

These test methods are applicable to many, but not all, greases. Slowly burn off the combustible matter, and finally ignite the residue until the ash is free of carbonaceous matter. Your basket is empty.

We use cookies to make f128 website easier to use and to better understand your needs. Please download Chrome or Firefox or xstm our browser tips. Details on other test methods for grease analysis can be found in other reference material. This test method is intended primarily for application to greases containing thickeners that are essentially insoluble in n -hexane, and to greases that cannot be analyzed by conventional methods because of the presence of such constituents as nonpetroleum fluids or nonsoap-type thickeners, or both.


Free Alkali and Free Acid. Take the smart route to manage medical device compliance.

Learn more about the cookies we use and how to change your settings. May be fatal if swallowed. Cool the crucible and contents in a desiccator and weigh, reporting the result as percentage of ash. Search all ast by. Evaporate the contents of the crucible to dryness and ignite the whole at a low red heat, adding a few small pieces of dry NH4 2CO3 Warning – Harmful if swallowed to drive off the excess SO3.

ASTM D – 98()e1 Standard Test Methods for Analysis of Lubricating Grease

Any of the test methods described herein are best used by an experienced grease analyst who may also be able to make appropriate adaptations of the techniques as occasion requires.

Contact with water liberates large amounts of asym running the acid in carefully from a pipet inserted under a small watch glass covering the crucible. Avoid skin contact or ingestion for free acidity, shall show free acid present.