A system and a method for forming the system. The current of the analog input signal is integrated to an integrated charge for producing a proportional voltage or current sample at a signal output at the end of the sampling phase. A related method and storage medium with instructions for performance of the method also provided. The abrasive layer comprises a binder, abrasive particles distributed in the binder, and a resin control additive distributed in the binder, and wherein the abrasive layer has a substantially uniform thickness. The mercaptans in the light naphtha may be removed by thioetherification prior to splitting or by wet caustic wash afterwards.