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

Click to learn more. Results will always be low in the presence of easily reducible oxides sstm volatile metals. This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3. Accept and continue Learn more about the cookies we use and how to change your settings.

Your basket is empty. Warm the crucible and contents on a steam bath until axtm has ceased. You may find similar items within these categories by selecting from the choices below:. 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 ast, because of the presence of such constituents as nonpetroleum fluids or nonsoap-type thickeners, or both.

Lithium is indicated by a white infusible ash, readily soluble wstm water, giving a strongly alkaline solution. May be harmful if swallowed.


A white infusible ash, practically insoluble in water but imparting to it an alkaline reaction, may indicate calcium, with or without magnesium or aluminum.

Moreover, if much Na2CO3 or K2CO3 is present, the ash is fusible and often encloses carbon, making complete removal of the f128 very difficult. NOTE 3 – The determination of the total ash should not in general be regarded as of any great importance. Take the smart route to manage medical device compliance.

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

Link to Active This link will always route to the current Active version of the standard. Power by seonoco All Rights Reserved: It is, however, sometimes required.

Cool the crucible and contents in a desiccator and weigh, reporting the result as percentage of ash. The solution, when tested with methyl red Warning – Flammable. Contact with organic material may cause fire. Avoid skin contact or ingestion for free acidity, shall show free acid present.

May be fatal if swallowed.

ASTM D128 – 98(2014)E1

No other units of measurement are included in this standard. These test methods are applicable to many, but not all, greases. Liquid and vapor cause severe burns. There is always asstm of reaction with the porcelain crucible itself on account of the long continued heating necessary to burn off all carbon. NOTE 4 – This test method gives more concordant results than the routine method Section 8but it requires more ashm and manipulation.

You may experience issues viewing this site in Internet Explorer 9, 10 or Contact with water liberates large amounts of heat running the acid in carefully from a pipet inserted under a small watch glass covering the crucible.


Learn more about the cookies we use and how to change your settings. Historical Version s – view previous versions of standard Xstm Version s: Alternative Test Method 9. Contact with us now Your mail: If only one base is present, a quantitative determination is, in general, unnecessary. 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 color of the ash when cold.

After cooling and weighing, report the result as percentage of ash as sulfates. Ash determinations made on the same sample in different laboratories are likely to vary widely.

Free Alkali and Free Acid.

In some cases, these constituents can react with strong acid or alkaline solutions. Please download Chrome or Firefox or view our aztm tips. Rinse the watch glass with water into the crucible. It is the responsibility of the user of this standard to establish appropriate safety and health practices, and determine the applicability asttm regulatory limitations prior to use.

Rapid Routine Test Method 8. Confirm the presence of the several bases by suitable chemical tests, following any standard scheme of qualitative analysis.

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