HQ11d pH portable meter and IntelliCal pH probe, standard, liquid filled, 1 m cable; measuring range: 0 to 14 pH, resoution selectable: 0.1/0.01/0.001, automatic temperature compensation; ORP: ±1500 mV, resolution 1 mV; temperature range: -10.0 to 110 °C, resolution: 0.1 °C; automatic buffer recognition 4, 7 and 10 pH, IUPAC, DIN; with reminder function for calibration and standard check; status display of electrode; data memory for 500 readings; sample and operator identification; backlitgraphic display with automatic economy mode, date and time; power supply: 115 V/ 250 V, batteries; 4 AA or accus; protection class: IP 67 for instrument, outdoor electerodes and connections; dimensions/weight 95 x 197 x 36 mm (H x B x T), 323 g (without batteries).