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ASTM D 482 Document Information:
Title
Standard Test Method for Ash from Petroleum Products
ASTM International
Publication Date:
Dec 1, 2007
Scope:
This test method covers the determination of ash in the range
0.001–0.180 mass %, from distillate and residual fuels, gas turbine
fuels, crude oils, lubricating oils, waxes, and other petroleum
products, in which any ash-forming materials present are normally
considered to be undesirable impurities or contaminants (Note 1).
The test method is limited to petroleum products which are free
from added ash-forming additives, including certain phosphorus
compounds (Note 2).
NOTE 1—In certain types of samples, all of the ash-forming
metals are not retained quantitatively in the ash. This is
particularly true of distillate oils, which require a special ash
procedure in order to retain metals quantitatively.
NOTE 2—This test method is not intended for the analysis of
unused lubricating oils containing additives; for such samples use
Test Method D 874. Neither is it intended for the analysis of
lubricating oils containing lead nor for used engine crankcase
oils.
The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information only.
The preferred expression of the property is mass %.
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.
*A Summary of Changes section appears at the end of this
standard.
Keywords:
- ash
- crude oils
- distillate oils
- fuel oils
- lubricating oils
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