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 – 98()e1 Standard Test Methods for Analysis of Lubricating Grease
Click adtm learn more. Historical Version s – view previous versions of standard. 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.
Avoid skin contact or ingestion for free acidity, shall show free acid present. Free Alkali and Free Acid. Link to Active This link will always route to the current Active version of the standard. A white infusible ash, practically insoluble in water but imparting to it an alkaline reaction, may indicate calcium, with or without magnesium or aluminum.
ASTM D standard test methods for analysis of lubricating grease – YONGRUN
Lithium is indicated by a white infusible ash, readily soluble in s128, giving a strongly alkaline solution. You may experience issues viewing this site in Internet Explorer 9, 10 or Warm the crucible and contents on a steam bath until effervescence has ceased. Contact with organic material may cause 1d28. The faster, easier way to work with standards. Find Similar Items This product falls into the following categories.
May be fatal if swallowed. Power by seonoco All Rights Reserved: Your basket is empty. Contact with us now Your mail: NOTE 4 – This test method gives more concordant results than the routine method Section 8but it requires more time and manipulation.
Confirm the presence of the several bases by suitable chemical tests, following any standard scheme of qualitative analysis. Take the smart route to manage medical device compliance. Slowly burn off the combustible matter, and finally ignite the residue until the ash is free of carbonaceous matter. Accept and continue Learn more about the cookies we use and how to change your settings. Results will always be low in the presence of easily reducible oxides of volatile metals.
Rapid Routine Test Method 8. Alternative Test Method 9.
You may find similar items within these categories by selecting from the choices below:. Please download Chrome or Firefox or view our browser tips. May be harmful if swallowed. These test methods are applicable to many, but not all, greases. 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.
The constituents that can be determined are soap, unsaponifiable matter petroleum oil, and so forthwater, free alkalinity, free fatty acid, fat, glycerin, asym insolubles. Rinse the watch glass with water into the crucible. NOTE 3 – The determination of the total ash should not in general be regarded as of any great importance. No other units of measurement are included in sstm standard.
There is always likelihood of reaction with the porcelain crucible itself on account of the long continued heating necessary to burn off all carbon.
ASTM D128 – 98(2014)E1
After cooling and weighing, report the result as percentage of ash as sulfates. It is, however, sometimes required. Learn more about the cookies we use and how to change your settings. Historical Version s – view previous versions of standard Translated Version s: Ash determinations made on the same sample in different laboratories are likely to vary widely. wstm
If only one base is dd128, a quantitative determination is, in general, unnecessary. Search all products by. If lead or zinc soap is known to be absent, a platinum crucible is more convenient. In some cases, these constituents can react with strong acid or alkaline solutions. Cool the crucible and contents in a desiccator and weigh, reporting the result as percentage of ash.