YSI Professional Series Pro20i Dissolved Oxygen Instrument with 4m Cable and Polarographic DO Sensor

Easy to operate and rugged, the Pro20i is equipped with a built-in cable and obtains accurate dissolved oxygen measurements using your choice of a polarographic sensor (included) or a galvanic “instant on” sensor (sold separately). The Pro20i’s non-detachable cable provides temperature measurements (no temperature probe needed). The Pro20i stores 50 data sets and features One Touch Cal for simple DO calibrations within 3 seconds. Additional features include a backlit graphic display, a glow-in-the-dark keypad, and a tough, IP-67, impact-resistant waterproof housing. Includes meter, polarographic DO sensor, and built-in cable.