Professional handheld pH-meter for laboratory and field. Features: Interval controlled datalogging function for up to 5000 records: perfect for long-term recording in the field 100 % waterproof USB interface for field measurement Fast data transfer to laptop or PC. Specifications: Range: • pH: -2,00 … +19,9 pH- • mV: -1200,0 … +0,3 mV • Temp.: -5,0 … +105,0 °C Accuracy (±1 digit): pH: ±0,01 pH- mV: ±0,3 mV at +15 °C … +35 °C Temp.: ±0,1 K • AutoRead: automatic/manual selectable • CMC: yes Calibration: • 1, 2, 3, 4 or 5 points; WTW Technical, DIN/NIST and further 16 buffer sets. • Calibration memory: up to 5 calibrations recallable. • Display: LCD graphic display, backlit. • Data memory: manual 200/automatic 5000. • Datalogger: manual/timer driven. • Interface: USB slave. • Power supply: 4 x 1.5 V AA or 4 x 1.2 V NiMH rechargeable. • Continuous operation: up to 1000 hours (150 with lit display). Delivery Contents: • pH-meter pH 3310 • manual