A method and a system are disclosed for generating a recommendation of a retail location on a network-based system. The system includes a rotary stage, one or more workpiece fixtures that hold the samples in the rotary stage, and a number of different sized measurement devices. The process step of selective hydrolysis is essential for removal the harmful composition of poly-amine-ester-amides in resulting the better performance of the additive, particularly the positive engine’s octane requirement or reducing the combustion chamber deposits. The image capture component’s field of view is generally perpendicular to the guide tube’s longitudinal axis.