Meet your new lab assistants. These pen meters and their range of add-ons from Ohaus ensure that you have the right lab equipment for the job. Featuring a wide range of pen meters and numerous electrodes, you can measure pH levels, Oxidation-Reduction Potential, conductivity levels, and dissolved oxygen in a variety of environments. Your lab can benefit from the tools and expertise provided by Ramo Trading. Our rotary tools, lab scales, and pen meters are all built to provide convenience and precision. Shop now to find the conductivity pen you need!