Dissolved Oxygen

Parameter Selection

Application Importance of Dissolved Oxygen in Brewing

Understanding and managing oxygen uptake during beer production is important for creating a stable product. In wort, a small amount of dissolved oxygen can ensure proper yeast fermentation, ultimately affecting important characteristics of the beer including color and taste. Typically, for a traditional ale or lager wort, 5 to 10 ppm of dissolved oxygen will provide a suitable environment for yeast. However, oxygen needs can vary based on yeast strains and specific gravity levels.

Spot checking can be helpful to ensure the connections to pumps, transfer lines, and tanks are secure during beer movement and fining so as to minimize exposure to air. Measuring dissolved oxygen before and after these transfer points may provide insight to faulty equipment or connections or may indicate if transfer practices could be improved.

For many beers, the final step is aging and secondary fermentation. During this process, the beer matures, developing natural carbonation and promoting unique flavors. Additional carbonation can be added through the infusion of carbon dioxide. Once carbonated, the beer is ready for packaging and is put into bottles or kegged for distribution. Too much oxygen in the finished product can result in off flavors or colors, resulting sometimes in a “skunky� aroma and a decreased shelf life.

While dissolved oxygen values can vary widely between breweries,a general rule of thumb is to obtain values less than 0.05 ppm throughout the post-fermentation process.

Meters

HI5000 Series Research Grade Laboratory Benchtops

The HI5421 is our most advanced benchtop Dissolved Oxygen (DO) meter incorporating the latest microprocessor to bring exceptional features and performance for the most demanding user. These meters are completely customizable to user specific requirements. These research grade meters have many features including:

  • Supplied with a thin designed Clark-Type polarographic probe that is 12mm (1/2â€�) in diameter
  • Easy to use as you are guided through every aspect of operation
  • Large color LCD that is sharp and easy to read
  • Factory calibration service plan available
  • Capacitive Touch Keypad that is easy to clean
  • Logging and USB connection for data management
Shop Now >

HI5000 Series Research Grade Laboratory Benchtops

The HI5421 is our most advanced benchtop Dissolved Oxygen (DO) meter incorporating the latest microprocessor to bring exceptional features and performance for the most demanding user. These meters are completely customizable to user specific requirements. These research grade meters have many features including:

  • Supplied with a thin designed Clark-Type polarographic probe that is 12mm (1/2â€�) in diameter
  • Easy to use as you are guided through every aspect of operation
  • Large color LCD that is sharp and easy to read
  • Factory calibration service plan available
  • Capacitive Touch Keypad that is easy to clean
  • Logging and USB connection for data management
Shop Now >

edge DO meters

The versatile edge DO meters are just a 1/2� thick and can be used as a benchtop, portable or as a wall mount to save valuable bench space. edge DO meters are supplied with a high performance dissolved oxygen probe that is 12 mm (1/2�) in diameter that can easily fit into a beer bottle. edge meters feature:

  • Capacitive touch keypad
  • Digital DO electrodes with built in temperature sensor
  • Built-in rechargeable battery
  • USBs for flash drive or computer connectivity

The edge family of meters include both multi-parameter versions and dedicated versions that only measure DO.

Shop Now >

Portable DO Meters

For on the go DO measurements, our portable meters provide the versatility to bring the meter to the sample. Polarographic probes consist of an anode and a cathode immersed in an electrolyte solution. When a voltage is applied to the electrolytic cell, a current proportional to oxygen concentration is produced. The electrical current is then converted into an oxygen concentration measurement. Features include:

  • Automatic calibration to 100% saturation and 0% DO
  • Automatic Temperature Compensation
  • GLP data for tracking calibration data

Basic Portable Meter Features:

  • Manual calibration to 100% saturation and 0% DO with trimmers
  • 2 button operation
  • Auto endpoint mode allows for consistency among users

Professional Portable Meter Features:

  • Automatic calibration to 100% saturation and 0% DO
  • Automatic Temperature Compensation
  • USB for data transfer
Shop Now >

Portable DO Meters

For on the go DO measurements, our portable meters provide the versatility to bring the meter to the sample. Polarographic probes consist of an anode and a cathode immersed in an electrolyte solution. When a voltage is applied to the electrolytic cell, a current proportional to oxygen concentration is produced. The electrical current is then converted into an oxygen concentration measurement. Features include:

  • Automatic calibration to 100% saturation and 0% DO
  • Automatic Temperature Compensation
  • GLP data for tracking calibration data

Basic Portable Meter Features:

  • Manual calibration to 100% saturation and 0% DO with trimmers
  • 2 button operation
  • Auto endpoint mode allows for consistency among users

Professional Portable Meter Features:

  • Automatic calibration to 100% saturation and 0% DO
  • Automatic Temperature Compensation
  • USB for data transfer
Shop Now >

Calibration Solutions

DO Calibration Solutions

For low range dissolved oxygen measurement we offer a zero oxygen calibration solution. This solution is used to calibrate the DO meter to 0% oxygen.

  • Bi-component solution that is shipped as two parts to increase shelf stability time
  • Available in 230 and 500 ml bottles
Shop Now >

DO Calibration Solutions

For low range dissolved oxygen measurement we offer a zero oxygen calibration solution. This solution is used to calibrate the DO meter to 0% oxygen.

  • Bi-component solution that is shipped as two parts to increase shelf stability time
  • Available in 230 and 500 ml bottles
Shop Now >

Maintenance & Accessories

Dissolved Oxygen Accessories

Periodic maintenance for a Clark-type polarographic dissolved oxygen (DO) probe includes changing the PTFE membrane cap and exchanging out the fill solution. Other accessories include a magnetic stirrer for the constant movement of solution for an accurate measurement.

Shop Now >

Dissolved Oxygen Accessories

Periodic maintenance for a Clark-type polarographic dissolved oxygen (DO) probe includes changing the PTFE membrane cap and exchanging out the fill solution. Other accessories include a magnetic stirrer for the constant movement of solution for an accurate measurement.

Shop Now >