There are two important standards that relate to biodiesel production and use in Europe, and subsequently adopted by British Standards: the biodiesel standard EN 14214 2003 and the mineral diesel standard EN 590 2004. They each aim to ensure that products which meet these standards are of the requisite quality. The mineral diesel standard also aims to ensure that blended biodiesel is also up to scratch because it requires that the biodiesel which goes into the blend must first meet the biodiesel standard. Argent Energy has a sophisticated laboratory at its production plant to ensure that all output is consistent with EN 14214.