-
Definition of surface tension
Surface tension is a contractive tendency of the surface of a liquid that allows it to resist an external force. It is revealed, for example, in the floating of some objects on the surface of water, even though they are denser than water, and in the ability of some insects (e.g. water striders) to run ...
-
Total Acid Number - ASTM D644
ASTM D644 is the test method for monitoring the degradation acid content of in-service oil. The acid number test method is performed by diluting the sample with a mixed solvent in a reaction beaker. While mixing, potassium hydroxide is titrated to chemically react with acidic components in the sample. ...
-
Total Base Number (TBN) - ASTM D2896
The two most common ASTM test methods for testing base number - ASTM D2896 and ASTM D4739. ASTM D2896 measures both detergents and dispersants and is the preferred base number test method for new (unused) engine oils. ASTM D4739 measures detergents and is the preferred base number test method for in-service ...
-
Base number of diesel engine
Testing a lubricant's base number measures its alkaline reserve - or its ability to neutralize degradation acids. Although viscosity is most important, base number determines an oil's suitability for continued use and is critical to safely extending drain intervals. A decrease in base number is typically ...
-
Total Base Number (TBN)
Total Base Number(TBN) is a measure of reserve alkaline additives put into lubricants to neutralize acids, to retard oxidation and corrosion, enhance lubricity, improve viscosity characteristic and reduce the tendency of sludge buildup. Simply put, it is a test to measure the ability to neutralize corrosive ...
-
Using conditions of Acid Number Tester KL632
1. Environmental temperature : 20℃ - 40℃2. Relative humidity : < 75%3. Concentration of neutral fluid: 0.02-0.03mol/L (Test oil type pH value ＜ 0.01mgKOH/g) 0.03-0.05mol/L (Test oil type pH value ＞ 0.01mgKOH/g)
-
Color Determination Methods
Tristimulus MethodCovers the automatic determination of the color according to ASTM & Saybolt Color Scale Method ASTM ColorFor a wide range of petroleum products, including lubricating oils, heating oils, diesel oils, insulating oils etc. Saybolt ColorFor colorless to slightly yellowish petroleum ...
-
Color Determination Instrument Using Scope
The using scope of color determination instrument includes aviation fuel, benzene, biodiesel, biofuel, chemicals, diesel, dyes, engine oil, fuel, gasoline, hydraulic fluid, insulating oil, transformer oil, jet fuel, jet lube, kerosene, light oil, lubricating oil, mineral oil, naphtha, solvent, turbine ...
-
Functions of Saybolt Color
The function of Saybolt Color is to control manufacturing quality of oil. The color is an important quality characteristic of oil, and is easily for user's observation. Under some conditions, the color may serve as an indication of the degree of refinement. For some oil which the color range is known, ...
-
Saybolt Color of Petroleum Products
Saybolt color --- an empirical definition of the color of a clear petroleum liquid based on a scale of -16 (darkest) to +30 (lightest). The number is derived by finding the height of a column of the sample that, when viewed through the length of the column, visually matches the appropriate one of three ...
