Dissolved Oxygen (DO) Probe
|John Sparks checks dissolved oxygen|
in the River Kakada.
This probe has a salt solution with a membrane over it, which is oxygen permeable. It sends an electric charge over the membrane, giving a reading of how much oxygen is in the water.
DISCUSS: Chat with our scientists about the latest conservation issues.
Certain aquatic plants and animals – and different environments – have different ideal levels of dissolved oxygen. A bog, for instance, would be expected to have a very low level of DO to be a healthy system, and typical bog organisms are adapted to those levels.
A rapid, like what the AquaRAP team sampled in the upper-Caura, is highly oxygenated because the water mixes freely with the air.
— Reported by Jensen Montambault
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