The DO-410 impresses with its ergonomic design, dust and water protection according to IP 65/67, and the illuminated display. This oximeter, featuring a maintenance-friendly galvanic sensor, is a practical entry-level device. Both the concentration in mg/l (ppm) and the saturation in percent can be read directly without the need for tables. Calibration is easily performed at the push of a button using ambient air. For field use in water bodies, it is recommended to use a DOP-401/DOP-402 protective cap to safeguard the membrane. Applications include freshwater and seawater aquaristics, aquaculture/fish farming, and monitoring of wells and water bodies.