The IPA-Based Flux Remover - IsoClean is a mild, non-corrosive, ESD-safe circuit cleaner that quickly and easily removes fluxes, pastes, light oils and grease, as well as organic residues. It is effectively used as a circuit cleaner and stencil cleaner. MicroCare IPA-Based Flux Remover IsoClean is the strongest IPA-based cleaner on the market. - While most IPA-based cleaners contain up to 30% water, this cleaner contains virtually no water and is undiluted by airborne humidity. 100% volatile, it evaporates cleanly with no rinsing required.