The RT-500 Resistivity Tester measures surface resistivity using parallel electrodes and concentric rings. Tests resistance to ground (RTG), resistance between two points (RTT) and volume resistance. Ohm-Stat RT-500 tests each sleeve of a garment for continuity in addition to performing dissipative seating tests.

The RT-500 can also test shoes, heelgrounders, and wrist straps with optional accessories. Conforms to ANSI/EOS/ESD (S4.1, S7.1, S12.1, S2.1), EN 61340.5.1, ASTM-F150, NFPA 99A, and ASTMD257 standards.

The Ohm-Stat RT-500 Megohmmeter is designed to quality inspect incoming materials such as floor finishes, floor mats, table mats, conductive floor tiles, work surfaces, paints, bags, wrist straps, common point ground cords, footwear, packaging materials, clothing, and ESD chairs in static controlled areas.