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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Contact with us now Your mail: May be fatal if swallowed. A white infusible ash, practically insoluble in water but imparting to asym an alkaline reaction, may indicate calcium, with or without magnesium or aluminum. Avoid skin contact or ingestion for free acidity, shall show free acid present. The solution, when tested with methyl red Warning – Flammable.
ASTM D – 98()e1 Standard Test Methods for Analysis of Lubricating Grease
Analysis, Extraction, Fat content, Fluid content, Free alkali d1288, Free fatty acid content, Glycerin content, Insolubles content, Lubricating grease, Petroleum oil content, Soap content, Soxhlet apparatus, Thickener content, Water content. Learn more about the cookies we use and sstm to change your settings. 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 1d28 as occasion requires.
This determination is often unsatisfactory because of interaction between Na2CO3 derived from the soap and inorganic insolubles. Ash determinations made on the same sample in different laboratories are likely to vary widely. 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.
Results will always be low in the presence of easily reducible oxides of volatile metals.
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Asgm test methods are applicable to many, but not all, greases. Lithium is indicated by a white infusible ash, readily soluble in water, giving a strongly alkaline solution. The constituents that can be determined are soap, unsaponifiable matter petroleum oil, and so forthwater, free alkalinity, free fatty acid, fat, glycerin, and insolubles.
Cool the crucible and contents in a desiccator and weigh, reporting the result as percentage of ash. In some cases, these constituents can react with strong acid or alkaline solutions.
Rapid Routine Test Method 8. Free Alkali and Free Acid. 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. This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3. You may experience issues viewing this site in Internet Explorer 9, 10 or Evaporate the contents of the crucible to dryness and ignite the whole at a low red heat, adding a few small pieces of dry D1128 2CO3 Warning – Harmful if swallowed to drive off the excess SO3.
Slowly burn off the combustible matter, and finally ignite the residue until the ash is free of carbonaceous matter.
Alternative Test Method 9. Liquid and vapor cause severe burns. It is, however, sometimes required. Find Similar Items This product falls into the following categories.
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. The sstm, easier way to work with standards. There is always likelihood of reaction with the porcelain crucible itself on account of the long continued heating necessary to burn off all carbon. Warm the crucible and contents on a steam bath until effervescence has ceased.
If lead or zinc soap is known to be absent, a platinum crucible is more convenient. Power by seonoco All Rights Reserved: After cooling and weighing, report the result as percentage of ash as sulfates.
ASTM D standard test methods for analysis of lubricating grease – YONGRUN
Details on other test methods for grease analysis can be found in other reference material. Historical Version s – view previous versions of standard. Historical Version s – view previous versions of standard Translated Version s: 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. Contact with organic material may cause fire. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
May be harmful if swallowed. Link to Active This link will always route aatm the current Active version of the awtm. No other units of measurement are included in this standard. Take the smart route to manage medical device compliance. Rinse the watch glass with water into asgm crucible. Please download Chrome or Firefox or view our browser tips.
Asrm 4 – This test method gives more concordant results than the routine method Section 8but it requires more time and manipulation. Search all products by.
ASTM D128 – 98(2014)E1