BS PAS 91:2013+A1:2017

BS PAS 91:2013+A1:2017 refers to temperature volume correction factors, which allow users to convert volumes,measured at ambient conditions, to those at reference conditions for transactional purposes. Thisdocument also refers to compressibility factors required to correct hydrocarbon volumes measuredunder pressure to the corresponding volumes at the equilibrium pressure for the measuredtemperature.Incorporates the following:Amendment, November 2017