A compact, easy-to-use resistivity meter for fast ESD material testing. The Static Solutions Ohm-Stat™ RT-500 Economy Resistivity Meter is a lightweight, portable megohmmeter designed for quick resistivity and resistance testing in static-controlled environments. Ideal for incoming inspection, routine audits, and troubleshooting, it offers a convenient way to verify whether ESD materials and grounding products are performing as intended. The RT-500 measures surface resistivity using parallel electrodes and concentric rings, and also supports RTT, RTG, and volume resistance testing with accessories. With an LED display, automatic zeroing, and automatic power shutoff, it is built for practical day-to-day testing across mats, work surfaces, flooring, garments, packaging, seating, and grounding products. The RT-501 kit includes two 5 lb. resistance probes for immediate use. Download Product Information ▶ RT-500 Economy Resistivity Meter Key Advantages: Compact, Convenient Testing – Small and lightweight for easy use between workstations, audit areas, and inspection points, while offering fast verification of surface resistivity and grounding-related resistance during routine ESD checks. Versatile Measurement Performance – Measures RTT, RTG, and volume resistance with accessories across conductive, dissipative, and insulative materials. Simple Visual Operation – Color LED range indication, automatic zeroing and shutoff, and a low battery warning help make testing quick and easy. Broad Application Use – Supports inspection of mats, floor finishes, conductive tiles, work surfaces, paints, bags, garments, chairs, packaging, wrist straps, and footwear. Compliance-Ready Design – RoHS, CE, and EOS/ESD S.20.20 compliant and suitable for programs aligned with ANSI, ASTM, EN, and related standards. Need a more complete resistivity testing kit? Explore the RT-1000 Standard Resistivity Kit. Product Details Weight: 8.4oz Dimensions: 5 x 2.6 x 1.2in Testing Methods: Parallel electrodes and concentric rings Measurement Range: 10³ to 10¹² ohms Test Voltages: 10V and 100V Power Source: 9V battery Display: LED display with color range indication What's Included Ohm-Stat™ RT-500 Resistivity Meter Grounding hardware and instructions NIST calibration certification One-year limited warranty Carrying case RT-501 also includes (2) 5 lb. resistance probes