Take simple dissolved oxygen and temperature measurements with the Orion™ Star™ A123 DO Portable Meter with easy operation for basic field testing.

• Measure dissolved oxygen in percent saturation or mg/L with temperature using polarographic DO probes
• Calibrate using water-saturated air or custom value (Winkler titration)
• Automatically compensate DO readings using ATC temperature, manual salinity input, and manual barometric pressure
• Simplified, easy-to-read display shows main measurement with temperature, stability indicator, and electrode condition icon
• Easily recall calibration data for procedure checks
• Non-volatile memory preserves 50 point internal data log and meter settings, even with loss of power
• Three-year meter warranty

Take simple, routine dissolved oxygen and temperature measurements with the Orion™ Star™ A123 Dissolved Oxygen Portable Meter, an easy-to-use and budget-friendly instrument for basic dissolved oxygen analysis in the field.

These meters are a simple, economical solution for routine outdoor sample analysis. Featuring an emphasized measure key, selectable read modes, and measurement stability indicator, the basic Orion™ Star™ A123 dissolved oxygen meters are designed to deliver measurements users can trust at an affordable price. Flexible power options with AA batteries or optional universal power adapter.

Calibrate polarographic DO probes using water-saturated air or custom value using Winkler titration. Quickly navigate setup menus and ensure consistent calibrations using the simple keypad layout and on-screen text prompts. Use the included electrode stand to easily place sensors in samples and simplify storage. The IP67-rated housing is waterproof for rugged field operation.