Jandel Engineering offers an indium-tin-oxide (ITO) coated glass sample that can be used as a reference sample to assess whether a four point probing system is work-ing properly.
Four-Point-Probes offers 4 point probe equipment for measuring the sheet resistance and bulk (volume) resistivity of materials used in the semiconductor industry, universities, and in materials science including thin films, wafers, ingots, and other materials and conductive coatings.