ASTM D7321 - Particulate Contamination of Biodiesel B100 Blend Stock Biodiesel Esters and Biodiesel Blends by Laboratory Filtration
Signiﬁcance and Use
5.1 The mass of particulates present in a fuel is a signiﬁcant factor, along with the size and nature of the individual particles, in the rapidity with which fuel system ﬁlters and other small oriﬁces in fuel systems can become plugged. This test method provides a means of assessing the mass of particulates present in a fuel sample.
5.2 The test method can be used in speciﬁcations and purchase documents as a means of controlling particulate contamination levels in the fuels purchased.
1.1 This test method covers the determination of the mass of particulate contamination in B100 biodiesel in accordance with Speciﬁcation D6751 and BXX blends that are prepared against all No. 1 and No. 2 grade fuels allowed within Speciﬁcations D396 and D975.
NOTE 1—Middle distillate fuels with ﬂash points less than 38 °C have been ignited by discharges of static electricity when the fuels have been ﬁltered through inadequately bonded or grounded glass ﬁber ﬁlter systems. See Guide D4865 for a more detailed discussion of static electricity formation and discharge.
Extracted, with permission, from ASTM D7321-21 - Particulate Contamination of Biodiesel B100 Blend Stock Biodiesel Esters and Biodiesel Blends by Laboratory Filtration, copyright ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428. A copy of the complete standard may be purchased from ASTM International, astm.org