High-precision laboratory dissolved oxygen meter, suitable for measuring DO, BOD, OUR and SOUR, setup menu includes 15 options, accuracy 0.2 mg/L.

High-precision laboratory dissolved oxygen meter, suitable for measuring dissolved oxygen concentration and saturation, setup menu includes 15 options, accuracy 0.2 mg/L.

Economical benchtop dissolved oxygen meter, 1 or 2 points calibration, setup menu contains 6 options, suitable for educational applications, accuracy 0.5 mg/L.

Professional benchtop dissolved oxygen meter, 1 or 2 points calibration, setup menu contains 9 options, suitable for laboratory applications, accuracy 0.2 mg/L.