Abstract: Systems and methods for varnish abatement and removal from in-service fluids and components of an industrial lubricated system. The systems and methods may include adding an effective amount of a solubility enhancer to the in-service fluid, and contacting the mixture with a medium having acrylamide or styrenic functionality to remove contaminants from the mixture. Systems may include a medium circuit having a medium pump and a medium component and a solubility enhancer reservoir arranged to dispense solubility enhancer to the reservoir. Methods may include pre-conditioning the in-service fluid before adding solubility enhancer.

Abstract: Disclosed in certain embodiments is a method of determining the individual concentration of different antioxidants of the same class in a sample comprising contacting the sample with an effective amount of phenol; and analyzing the sample by voltammetry.