Take simple, routine dissolved oxygen and temperature measurements with the Thermo Scientific Orion Star A113 Dissolved Oxygen Benchtop Meter, an easy-to-use and budget-friendly instrument for basic dissolved oxygen analysis in the lab. 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.

Features and Benefits

• Automatic temperature, manual salinity input and manual barometric pressure compensation for an accurate result
• Two calibration options to meet your requirements: water-saturated air method or a Winkler titration
• Non-volatile memory holds up to 50 data points
• IP54-rated housing handles splashes and can be wall-mounted if table space is unavailable
• Accepts Thermo Scientific™ Orion™ polarographic dissolved oxygen probes
• Three-year meter replacement warranty

Multiple Power Options

• Universal power adapter that works with almost every AC power source
• Alternative power source of four AA batteries (sold separately)

Easy to Read Backlit Display

• Large, informative screen clearly shows the main information, including DO reading in mg/L or % saturation, temperature, meter mode and power source
• Thermo Scientific AUTO-READ locks in the stable reading on your screen and ready indicator alerts when readings are stable, so you don’t miss a reading.
• Simple button layout and onscreen messages help with calibration and setup menu choices
• Icons provide quick updates on battery life and completed calibration status