3520 pHmV meter supplied with glass combination pH electrode (924 005), electrode stand and holder, ATC probe (027 500), BNC shorting plug, pH 4, 7 and 10 buffer sachets 230v​.

The 3520 dynamic pH/mV meter offers research grade specifications with a comprehensive range of features and functions, making it suitable for the broadest range of research, general laboratory, QC and GLP based applications. The built in data logger can store, print or output readings based on a wide range of trigger options, making this model suitable for monitoring and controlling pH levels.

Display

Primary display – 4½ digit. Provides direct readout in pH and millivolts of samples and standards. Mode annunciators – shows selected measurement mode; pH, mV (Absolute and Relative). Secondary display – 3½ digit display. Provides direct readout of automatic or manual temperature. Mode annunciators – indicates temperature in °C or °F and whether the measurements are manually temperature compensated (MAN symbol). Endpoint symbol – this symbol is displayed when an endpoint has been detected. Mode tags – Each mode tag is highlighted when selected; SETUP, MODE (pH or mV), STATUS or RESULTS. If a double headed arrow symbol is present this indicates that the mode can be changed to an alternative option (pH/mV). Real time clock - will display either date or time. The following symbols will appear along the display: Padlock - Set up parameters security locked Notepad symbol - data logging to internal memory IrDA status Alarm indication - an Up arrow refers to Hi alarm / a Down arrow refers to Low alarm

ESC used to switch the instrument on and to place into standby mode (only if power supply lead remains connected to the instrument). Also used to escape/exit a mode. CAL / CLR used to select and perform a calibration sequence. This key is also used to clear readings from Memory. Used to select Abs/Rel mV in mV mode. Print key  used to initiate a print. Up Arrow used for adjustment during set up, to scroll results and to toggle between mV and pH modes. Down Arrow used for adjustment during set up, to scroll results and to toggle between mV and pH modes. Left Arrow used for adjustment during set up and to move between mode tags. Right Arrow used for adjustment during set up and to move between mode tags. STO  used to accept an entered value in set-up mode and to instigate a stored reading. This key can also be used as a CAL key during calibration.

Ref Socket 2mm pin socket. Connection socket for separate reference electrode. When performing measurements with some pH and ion selective electrodes a separate reference electrode is needed. pH Socket BNC type socket which allows combination pH or redox electrodes to be used. Temp Socket 8 pin mini-DIN socket. This allows the optional Automatic Temperature Compensation (ATC) probe to be connected. Alarm Output  2 x 4mm sockets. Open collector alarm outputs. Red for Hi / Black for Low. Printer Socket 9 way socket for RS232 and IrDA connection. Power In AC 9V I/P socket. 2.1 x 5.5mm socket allowing the power supply to be connected to the instrument. Analog Out 2x4mm sockets. Analogue output (buffered electrode potential).