Thermo Scientific Advanced Multichannel Benchtop ISE/pH/mV/ORP Meters

Model 720A features easy-to-understand user prompts and dual electrode inputs. pH can be measured with ROSS Resolution* to 0.001 pH units. The pH auto-calibration feature recognizes five pH buffers using built-in buffer/temperature tables. Full five-point concentration calibration with automatic blank correction improves results of low level measurements. Store data using the internal datalogger or print via the RS-232 interface to the optional Orion 900A printer. It can also be connected to a computer. GLPdoc* records calibration parameters such as slope, temperature, mV of standards and time and date of calibration, providing a convenient record-keeping system compatible with Good Laboratory Practices. 110V.
Model 920A is similar to Model 720A with the added feature of high and low alarm limits, display hold and the ability to work with up to seven different electrodes when connected to the multichannel electrode switchbox (246-11047). Accepts up to five standards for concentration calibration to ensure low level measurement accuracy. Autoblank correction feature automatically corrects concentration results for background ion levels. Advanced ISE features include programmed incremental techniques, calibration edit and temperature-compensated ISE measurement. Use the calibration edit feature for reviewing calibration standards to determine working range. With GLPdoc, all measurement parameters, including slope, temperature, mV of standards and time and date of calibration automatically print on the optional Model PRT300 printer or to a computer via RS-232 output. 110V.