Thermo Scientific Orion Star A111 Benchtop pH/ISE/mV/Temperature Meter Kit Thermo Scientific Orion Star A111 pH Benchtop Meter makes it easy and affordable to take simple, accurate pH measurements; includes Epoxy Refillable pH/ATC Triode (mini DIN connector) Also includes pH Buffer 60mL Kit: 1 x 2 oz. (60mL) bottle each pH 4.01, 7.00, 10.01 buffers, pH electrode storage solution and general cleaning solution Large LCD display shows pH or mV readings along with temperature; icons provide quick updates on battery life, electrode status and calibration information; AUTO-READ locks in the stable reading Non-volatile memory holds up to 50 data points; included electrode arm and newly-designed probe holder make it easier to maintain and place probes into samples Plug the meter into almost any power outlet with the included universal power adapter; may use four AA batteries (sold separately); IP54-rated housing can handle splashes; can be wall-mounted