Corning® permeable support plates and inserts are widely used in cell culture research to model epithelial and endothelial barriers, study transport and permeability, evaluate drug absorption, and measure transepithelial/transendothelial electrical resistance (TEER). WPI offers a range of TEER measurement instruments, electrodes, and accessories designed to work with many of Corning's Transwell® inserts and permeable support systems. This guide provides an overview of compatible plate formats, measurement options, and supporting accessories to help researchers select the right tools for their barrier integrity and cell culture applications.