ISO/TR 19441:2018 – Petroleum products – Density versus temperature relationships of current fuels, biofuels and biofuel components, published February 2018. It provides fundamental and detailed background information to consultants implementing QuantityWare BCP for such products. It also references the QuantityWare working paper “Temperature corrections for biofuel – mineral fuel/heating oil mixtures”, which provides guidance on the choice of relevant quantity conversion standards.