This standard was created from the original ASTM D6217 and that standard used two filters; a control filter and a test filter. In creating what has become ASTM D7321 it was recognized that the control filter was not needed. Since the publishing of ASTM D7321 it has become apparent that there was some language remaining in D7321 that still referred to a control filter and thus creating confusion in the use of the standard.
Keywordsbiodiesel; biodiesel blend; diesel fuel; glass fiber filter; gravimetric determination; laboratory filtration; middle distillate fuel; particulate contamination;
Ballot Item Approved as D7321-2014 and Pending Publication