Used for field measurement of dissolved oxygen in water. The stainless steel probe adds durability and sinking weight. Features pushbutton calibration, large backlit display and temperature display at all times. Measures mg/L and % saturation. Cables are 12 feet, 25 feet, or 50 feet. Range 0-20mg/L to 0.01, 0-200% air saturation to 0.1%.
