Dissolved oxygen meters, rugged dissolved oxygen probes, and solutions designed to meet your standards for performance and price for your dissolved oxygen readings.

Orion™ Versa Star Pro™ DO Benchtop Meter

Get high accuracy, premium performance and ultimate flexibility with the Thermo Scientific™ Orion™ Versa Star Pro™ Benchtop Meter with Dissolved Oxygen/RDO Module. Meet your most challenging applications for dissolved oxygen and temperature. Easily view measurements on the stunning color display and customize the four meter channels with interchangeable modules. Use an RDO optical or polarographic DO probe and calibrate using water-saturated air, air-saturated water, custom value (Winkler) or zero point.

Features
  • Onscreen measurement stability indicator lets you know exactly when your measurements are ready.
  • Selectable read modes include Auto-Read to hold a stable reading, Continuous to show changing readings, Timed to log data at specific intervals and Single-Shot to hold a reading after a specific wait time is reached.
  • Audible alarms automatically notify you when a set offset value, high/low limit value and calibration time interval are reached.
  • Easily access, update and switch your preferred measurement settings, using 10 password-protected methods per channel.
  • Uniformly mix solutions using up to two meter-controlled stirrer probes that are easy to position and can be quickly rinsed between samples.
  • Data log collects and date/time stamps up to 2000 measurement sets with optional electrode ID, sample ID and account ID.
  • Calibration log stores 30 most recent calibrations per parameter.
  • Ensure measurement integrity by viewing the active calibration log while taking readings.
  • Non-volatile meter memory preserves data and settings, even in the event of power loss.
  • Meter software facilitates data transfers to a computer via USB or RS232 connections.
  • IP54-rated housing resists dust and splashes and can be wall-mounted if table space is limited.

Orion™ Pro Star DO213 Dissolved Oxygen Bench Meter

Designed to provide accurate and reliable dissolved oxygen, barometric pressure and temperature analysis, the Orion Pro Star DO213 bench meter is well suited for laboratories that desire a modern meter with advance performance. Featuring a 7-in., high-resolution color display with responsive capacitive touchscreen, the Orion Pro Star meter focuses on ensuring an easy to use, innovative meter for your testing needs. The Orion Pro Star meter offers onscreen guidance with step-by-step instructions and supports GLP compliance with date and time stamped calibration logs and data logs.

Features
  • Large 7-in., high-resolution color display
  • Responsive touchscreen operable with gloves
  • Angled display to help ensure ergonomic viewing
  • Streamlined, easy to operate user interface
  • Vertical meter orientation helps optimize bench space
  • Supports GLP compliance
  • Stores 20 calibration logs per parameter with date and time
  • Stores 10,000 data log sets with date and time
  • Outputs to a printer, computer, or USB flash drive for long-term data retention
  • Inputs sample ID with optional USB barcode scanner, USB keyboard or USB mouse
  • Stirs samples with meter-controlled and meter-powered stirrer probe

Orion Lab Star DO Dissolved Oxygen Bench Meters

Measure dissolved oxygen as percent saturation or concentration in ppm or mg/L with temperature using the Orion Lab Star DO113 DO bench meter. Featuring a large, backlit display for easy viewability and small footprint to save bench space, this DO meter is ideal for simplified, budget-friendly testing. Use the onscreen stabilizing and ready indicators to help identify when DO meter readings are complete. View active calibration logs with date and time stamp, record key measurements using the 500-point data log with date and time stamp, and output all logs to a printer or computer.

Features
  • Budget-friendly DO meter for simplified dissolved oxygen as percent saturation or concentration testing
  • Display shows dissolved oxygen, barometric pressure, temperature and salinity simultaneously for accurate data recording
  • Measure 0.0 to 300.0 % saturation, 0.00 to 30.0 mg/L or ppm and -5.0 to 105.0 °C or 23.0 to 221.0 °F to ensure comprehensive measurement capabilities
  • Perform 100% and 0% saturation calibrations, one point concentration calibration using a custom value (Winkler) and one point temperature adjustment calibrations for proficient SOP compliance
  • Use automatic barometric pressure compensation for DO measurements with manual value entry in mmHg or bar
  • Use automatic salinity compensation for DO measurements with value manual entry of 0.0 to 50.0 ppt
  • Large 5 inch backlit display makes viewing and recording measurements easy
  • Small meter footprint saves valuable bench space in your lab
  • Onscreen stabilizing and ready indicators help identify when readings are complete
  • Date and time data stamped data and calibration logs support GLP compliance
  • View active DO and temperature calibration logs with date and time stamp to ensure accurate, reproducible measurements
  • Use 500-point data log with date and time stamp to record key measurements
  • Output data and calibration logs to a printer or computer for long-term data storage

Portable DO meters

Orion Star™ A123 Dissolved Oxygen Portable Meter

Take simple, routine dissolved oxygen and temperature measurements with the Thermo Scientific™ Orion Star™ A123 Dissolved Oxygen Portable Meter. This instrument is easy-to-use and budget-friendly, designed for basic dissolved oxygen analysis in the field. 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
  • 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
  • User-friendly operation with basic calibration text prompts
  • Easily recall calibration data for procedure checks
  • Non-volatile memory preserves 50 point internal data log and meter settings, even with loss of power
  • Flexible power options with AA batteries or optional universal power adapter
  • IP67-rated housing is waterproof for rugged field operation
  • Meter kits include hard-sided field case and protective meter armor with electrode holders, adjustable wrist/belt strap and built-in meter stand

Orion Star™ A223 Dissolved Oxygen Portable Meter

Don't leave your measurements to chance when analyzing samples outside the lab. Orion Star A223 RDO/DO portable meters are designed to offer the reliability you need in a user-friendly package for your dedicated dissolved oxygen testing needs. This waterproof, portable meter displays critical data with your measurement including temperature, date and time, read type, measurement stability, active calibration info and power source status.

Features
  • Measure dissolved oxygen in percent saturation or mg/L with temperature using Orion RDO optical DO probes or Orion polarographic DO probes
  • Calibrate dissolved oxygen using water-saturated air, air-saturated water, custom value (Winkler titration) and zero point options
  • Automatically compensate dissolved oxygen readings using ATC temperature, manual salinity input and built-in barometer for barometric pressure readings
  • Informative, easy-to-read backlit graphic display with clear onscreen instructions simplifies operation
  • Capture your critical readings with measurement stability indicator and selectable read modes — Auto-Read holds a stable reading and Continuous shows changing readings with hold option
  • Data log collects and date/time stamps up to 1000 measurement sets
  • Non-volatile meter memory ensures your data and settings are protected, even with loss of power
  • Orion Star Com software facilitates data transfer to a computer via USB or RS232 connections
  • Flexible power options with AA batteries or optional universal power adapter
  • IP67-rated housing is waterproof for rugged field operation
  • Meter kits include hard-sided field case and protective meter armor with electrode holders, adjustable wrist/belt strap and built-in meter stand

Orion Star™ A323 Dissolved Oxygen Portable Meter

Get high accuracy and premium performance everywhere you need it with the Thermo Scientific™ Orion Star™ A323 Dissolved Oxygen and RDO Portable Meter. This instrument is designed for a wide range of dissolved oxygen and temperature testing and field applications. Evaluate samples in the most demanding locations using this waterproof meter with IP67-rated housing. Use an RDO optical or polarographic DO probe and calibrate using water-saturated air, air-saturated water, custom value (Winkler) or zero point.

Features
  • Measure dissolved oxygen in percent saturation or mg/L with temperature using Orion RDO optical DO probes or Orion polarographic DO probes
  • Calibrate dissolved oxygen using water-saturated air, air-saturated water, custom value (Winkler titration) and zero point options
  • Automatically compensate dissolved oxygen readings using ATC temperature, manual salinity input and built-in barometer for barometric pressure readings
  • Informative, easy-to-read, backlit graphic display with clear onscreen instructions simplifies operation
  • Capture your critical readings with measurement stability indicator and selectable read modes — Auto-Read holds a stable reading, Continuous shows changing readings with hold option and Timed logs data at specific intervals
  • Data log collects and date/time stamps up to 5000 measurement sets with optional sample ID and user ID
  • Calibration log stores 10 most recent calibrations
  • Non-volatile meter memory ensures your data and settings are protected, even with loss of power
  • Orion Star Com software facilitates data transfer to a computer via USB or RS232 connections
  • Flexible power options with AA batteries or optional universal power adapter
  • IP67-rated housing is waterproof for rugged field operation
  • Meter kits include hard-sided field case and protective meter armor with electrode holders, adjustable wrist/belt strap and built-in meter stand