ORP Pen Meter, 1.5 L x 1.77 W x 7.28" H, ABS Housing, ST20R Model, 1000 mV to 1000 mV Range, ± 2mV Accuracy, 1 mV Measurement Resolution, Dual LCD Display, Automatic Shut Off, Micro Alkaline Battery, 85% Relative Humidity
After more than a century of perfecting the art of measurement through our durable weighing products, Ohaus® precision is now available in a line of pen meters that provide accurate measurement of pH, oxidation-reduction potential (ORP), conductivity, salinity, and total dissolved solids (TDS). Starter pen meters are the economical option when you are simply looking for meters that will provide accurate measurement without restriction. ST10R and ST20R can bring measurement of ORP virtually anywhere the need for measurement of the availability of electrons in a liquid exist. Both models provide almost instantaneous results and the ST20R offers the ability to hold the reading right on the display to provide additional time for data logging.