Extech DO600 Dissolved Oxygen Pocket Tester

Features include data hold, auto power off, low-battery indicator, and analog bar graph that indicates trends. Order optional extension cable with probe weight to keep probe submerged and protected. Meter includes: DO electrode, protective sensor cap, spare membrane cap, electrolyte, neckstrap, and four 1.5 V batteries. Meter kit adds: 6 replacement membranes with caps, 16-ft (5-m) extension cable, probe weight guard, and hard carrying case. Measures in percent saturation or concentration Adjustable altitude and salinity compensation