Thermo Scientific Orion Star A123 Dissolved Oxygen Portable Meter offers a simple and cost-effective solution for routine outdoor sample analysis. The basic Orion Star A123 Dissolved Oxygen Meter features prominent measurement keys, optional reading modes, and a measurement stability indicator, designed to provide reliable measurements at an affordable price.

Utilize a polarographic dissolved oxygen (DO) probe to measure the percentage saturation of dissolved oxygen or mg/L values, as well as temperature.

Calibrate using saturated air with moisture or custom values (Winkler titration)

Automatic compensation of DO readings through ATC temperature, manual salinity input, and manual pressure adjustment.

Simplified, easy-to-read display shows main measurements, with temperature, stability indicators, and electrode status icons

User-friendly operation with basic calibration text prompts

Easily access calibration data for program verification

Even in the event of a power outage, non-volatile memory can retain 50 points of internal data logs and meter settings.

Flexible power options, available with AA batteries or optional universal power adapter

IP67 rated protective housing, waterproof and durable, suitable for on-site operations

Measurement kit includes: hard surface field jacket with electrode bracket, adjustable wrist/ waist strap, and an integrated instrument bracket.