Blending of butane in gasoline is a common practice, especially during the winter season, for providing the gasoline with RVP that is required for smooth operation of car engines in cold weather. Maximum incorporation of butane will not only influence the RVP but also reduce the cost of gasoline manufacturing. Gasoline is a composition of various chemical compounds that all contribute to the physical properties. On-line process analytics is highly important to ensure that at any stage during the blending all required quality parameters, including RVP and knock properties comply with their specification, as well as to reduce giveaways to their minimum. With its exclusive properties, the Beacon 3000 NIR process analyzer is highly effective and cost saving in the butane gasoline blending process.