Thermo Scientific Orion Star A221 pH/mV/ORP Meter

Record accurate and reliable pH, mV, ORP, and temperature measurements with the Thermo Scientific Orion Star A221 Portable pH Meter. This meter is ideal for a wide range of applications and advanced pH analysis in the field. Perform up to a 5-point pH calibration, log up to 1000 data point sets with time/date stamp and easily transfer calibration and data logs via USB or RS232 to a printer or computer with free downloadable Orion Star™ Com software. Waterproof meter ensures durable, rugged performance in outdoor environments with IP67-rated housing.