Your Safer Source for Science

Since 1977

Address P.O. Box 219 Batavia, IL 60510
Phone 800-452-1261
Fax 866-452-1436

The Winkler method is the standard technique for the determination of dissolved oxygen in fresh and salt water. This scaled-down procedure requires reduced sample volume, reduced reagent volumes, less expense, and less time.


  • Dissolved Oxygen
  • Water Quality Testing
  • Winkler Titration