Standard ASTM D1555 – Standard Test Method for Calculation of Volume and Weight of Industrial Aromatic Hydrocarbons and Cyclohexane – has been revised and issued as a new 2021 version. QuantityWare has carefully analyzed this new U.S. customary unit version. ASTM D1555M-16 (the metric version of ASTM D1555) has (until date of publication of this News Item) no revision and no new revised version. Concerning ASTM D1555-21, our analysis has shown that ASTM D1555-16 BCP template conversion groups are in compliance with this new 2021 version. An online documentation update for the PMC will be delivered with the next BCS 30x Collective Note.