Professional benchtop dissolved oxygen meter, 7 inch TFT display, stores up to 1000 data sets. The meter is suitable for measuring the DO, BOD, OUR and SOUR, accuracy: 0.2 mg/L.
Economical benchtop dissolved oxygen meter, 1 or 2 points calibration, setup menu contains 6 options. The meter is suitable for laboratory applications, accuracy: 0.5 mg/L.