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Orion 370 PerpHecT® digital LogR^TM meters include all the pH basics plus simultaneous display of pH, mV or RmV (ORP) and temperature. Use autocalibration with built-in Auto-Buffer-Recognition of three buffers or enter custom buffer values. Temperature compensation can be LogR^TM, automatic (with an ATC probe) or manual. These enhanced PerpHecT meters come complete with GLPcheck for verification of electrode reliability and GLPdoc^TM for printouts compatible with "Good Laboratory Practices," ROSS Resolution^TM to 0.001 pH units, and RS232 communications. These meters are available with a premium PerpHecT ROSS electrode, or in a GLP package which includes an Orion 8272BN PerpHecT ROSS Sure-Flow® electrode, PRT300 ink-based printer and cable. The Orion 370 meter also features a concentration mode for ISE measurements which allows a two point calibration and direct measurement. Three (3) year meter warranty. This system is ideal for busy, multi-user laboratories or plant environments. pH measurements are easy with the help of advanced features such as autocalibration, LogR mode, automatic temperature compensation, choice of pH resolution and diagnostic operator assistance codes. (1) Over 20°C temperature calibration range. PerpHecT® LogR^TM temperature measurement and compensation specifications are based on the use of PerpHecT and PerpHecT ROSS^TM brand electrodes. Use of other brand electrodes may impact performance.