The FLIPR® Membrane Potential Assay Kit enables observation of real-time membrane potential changes associated with ion channel activation and ion transporter proteins. Each homogeneous assay kit utilizes a proprietary indicator dye and quencher combination to maximize cell line/channel/compound applicability, while eliminating causes of data variability. This unique formula responds 10 times faster and has greater temperature stability than traditional dyes, providing high quality screening data that shows good correlation with manual patch clamp assays.