ASTM D91-02(2017)
Standard Test Method for Precipitation Number of Lubricating Oils
- Standard No.
- ASTM D91-02(2017)
- Release Date
- 2002
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- Replace By
- ASTM D91-02(2019)
- Latest
- ASTM D91-02(2019)
- Scope
-
4.1 Fully refined petroleum oils normally contain no naphtha insoluble material. Semirefined or black oils frequently contain some naphtha insoluble material (sometimes referred to as asphaltenes ). This test measures the amount of naphtha insoluble material in the oil. This quantity is reported as the precipitation number.
1.1 This test method covers the determination of the precipitation number of steam cylinder stocks and black oils, and can be used for other lubricating oils.
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.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM D91-02(2017) Referenced Document
- ASTM D4057 Standard Practice for Manual Sampling of Petroleum and Petroleum Products
- ASTM D4177 Standard Practice for Automatic Sampling of Petroleum and Petroleum Products
ASTM D91-02(2017) history
- 2019 ASTM D91-02(2019) Standard Test Method for Precipitation Number of Lubricating Oils
- 2002 ASTM D91-02(2017) Standard Test Method for Precipitation Number of Lubricating Oils
- 2002 ASTM D91-02(2012)e1 Standard Test Method for Precipitation Number of Lubricating Oils
- 2002 ASTM D91-02(2012) Standard Test Method for Precipitation Number of Lubricating Oils
- 2002 ASTM D91-02(2007)e1 Standard Test Method for Precipitation Number of Lubricating Oils
- 2002 ASTM D91-02(2007) Standard Test Method for Precipitation Number of Lubricating Oils
- 2002 ASTM D91-02 Standard Test Method for Precipitation Number of Lubricating Oils
- 1997 ASTM D91-97 Standard Test Method for Precipitation Number of Lubricating Oils
