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Significance and Use
4.1 This standard describes an apparatus that provides the versatility required to conduct oxidation or thermal stability tests on liquids using a wide variety of test conditions. It is sufficiently flexible so that new test conditions can be chosen in response to the changing demands of the marketplace.
4.2 Procedures using this apparatus are described in the following ASTM standard test methods: , , and . Other procedures may be in use, but they have not been developed as ASTM standard test methods.
1.1 This guide covers an apparatus used to measure the oxidation or thermal stability of liquids by subjecting them to temperatures in the range from 50 °C to 375 °C in the presence of air, oxygen, nitrogen, or other gases at flow rates of 1.5 L/h to 13 L/h, or in the absence of gas flow. Stability may be measured in the presence or absence of water or soluble or insoluble catalysts. Gases evolved may be allowed to escape, condensed and collected, or condensed and returned to the test cell.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D91 Test Method for Precipitation Number of Lubricating Oils
D156 Test Method for Saybolt Color of Petroleum Products (Saybolt Chromometer Method)
D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
D664 Test Method for Acid Number of Petroleum Products by Potentiometric Titration
D974 Test Method for Acid and Base Number by Color-Indicator Titration
D1500 Test Method for ASTM Color of Petroleum Products (ASTM Color Scale)
D3339 Test Method for Acid Number of Petroleum Products by Semi-Micro Color Indicator Titration
D5763 Test Method for Oxidation and Thermal Stability Characteristics of Gear Oils Using Universal Glassware
D5770 Test Method for Semiquantitative Micro Determination of Acid Number of Lubricating Oils During Oxidation Testing
D5846 Test Method for Universal Oxidation Test for Hydraulic and Turbine Oils Using the Universal Oxidation Test Apparatus
D6514 Test Method for High Temperature Universal Oxidation Test for Turbine Oils
ICS Number Code 19.040 (Environmental testing)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM D4871-11(2016), Standard Guide for Universal Oxidation/Thermal Stability Test Apparatus, ASTM International, West Conshohocken, PA, 2016, www.astm.orgBack to Top