Portable Dissolved Oxygen Meters

The Orion Star A323 RDO/Dissolved Oxygen Portable Meter is the ideal option for advanced measurement on location. The informative large backlit graphic LCD displays dissolved oxygen in percent saturation or concentration with temperature and electrode status.

The Orion Star A123 Dissolved Oxygen Portable meter combines accuracy with simplicity, its large LCD displays dissolved oxygen readings in mg/L or % saturation, temperatures presented in °C or °F, meter mode and battery life.

The Orion Star A223 RDO/Dissolved Oxygen Portable Meter features a large backlit graphic LCD display, is waterproof- protected with an IP67-rated housing. The onscreen display shows dissolved oxygen in percent saturation or concentration with temperature, calibration points, time, date, and elect...

The Orion Star A326 pH/RDO/Dissolved Oxygen Portable Meter is the ideal choice to use on location where advanced measurements are required. Features include electrode status, time, date, sample ID, user ID and calibration points.

The 3 Star Portable Dissolved Oxygen Meter is a battery operated meter which delivers over 2,000 hours of continuous operation.

The Orion 3 Star RDO meter requires no membranes and the only maintenance required is a simple cap replacement once a year.

The battery operated Orion 4 Star pH / DO meter is suitable for use in the most demanding applications and offers over 2,000 hours of continuous operation.

The Orion 4 Star pH / RDO meter requires no membranes. It offers simultaneus display of dissolved oxygen, pH and temperature on the backlit LCD display.

The Orion 5 Star meter simultaneously displays pH, dissolved oxygen, conductivity and temperature on the backlit LCD display.

The Orion 5 Star Plus is a waterprooof, battery operated meter for monitoring pH, DO and conductivity. It can deliver over 2,000 hours of continuous operation.