Model HD8705 Microprocessor Multiuse pHmeter

The HD 8705 is a combined instrument for taking precise measurements of pH, mV and temperature in the laboratory, on the field and in industrial systems. Various types of electrodes for pH may be connected to the BNC connector, electrodes for measuring the oxidoreduction potential (ORP) or ion specific electrodes (ISE). The temperature probes of the TP870 series are optional (TP870 for immersion, TP870C for contact, TP870A for air, TP870P for penetra-tion). In pH measurements the temperature probe automatically compensates the electrode temperature coefficient. If the temperature pro-be is not connected, manual compensation is automatically enabled (with the "up" A and "down" V keys).