Dissolved Oxygen Probe
The Dissolved Oxygen Probe is used to measure the concentration of dissolved oxygen in water samples tested in teh field or laboratory.  The probe's range is 0 to 14 mg/L of dissolved oxygen.

Suggested Experiments
  • Monitor dissolved oxygen in an aquarium containing different combinations of plant and animal species
  • Measure changes in dissolved osygen concentration resulting from photosynthesis and respiration in aquatic plants.
  • Use the sensor for an accurate on-site test of dissolved oxygen concentration in a stream or lake survey, in order to evaluate the capability of the water to support different types of plant and animal life
  • Measure Biological Oxygen Demand in water samples containing organic matter that consumes oxygen as it decays
  • Determine the relationship between dissolved oxygen concentration and temperature of a water sample

Example Graph showing Fluctuation of dissolved oxygen concentration in Elodea during light and dark periods
Graph from www.vernier.com