A: Detec’s low voltage scanning platform can test non-conductive and semi-conductive membranes. Testable membranes include but are not limited to: TPO, PVC, White & Gray EPDM, Black EPDM, Mod Bit, HDPE, Hot Fluid Waterproofing, Cold Fluid Waterproofing (including Tremco 250GC-R), and Traffic Coatings. The low voltage vertical roller can test non-conductive membranes.