How to Measure Dissolved Oxygen
http://www.ecy.wa.gov/programs/wq/plants/management/joysmanual/4oxygen.html

Washington State University Department of Ecology


This web page, hosted by the Washington State Department of Ecology, offers a general overview of dissolved oxygen and how it is measured. It includes protocols for measuring dissolved oxygen in turbulent waters as well as using the Winkler titration method. The site also features links to measuring other water quality parameters such as pH, nutrients, and turbidity.

This resource is referenced here:
Subject: Biology:Microbiology, Biology, Geoscience:Hydrology:Surface Water:Water Quality/Chemistry , Biology:Biogeochemistry, Geoscience:Geology:Geochemistry
Resource Type: Audio/Visual:Images/Illustrations, Scientific Resources:Overview/Reference Work, Activities:Field Activity, Lab Activity
Special Interest: Field-Based Teaching and Learning
Grade Level: General Public, Informal, Middle (6-8), College Lower (13-14), High School (9-12)
Topics: Biosphere:Biogeochemistry, Ecology, Microbiology, Solid Earth:Geochemistry, Biosphere, Hydrosphere/Cryosphere:Surface Water:Water Quality/ChemistryKeywords: DO, Azide-Winkler method