Dissolved Oxygen Meter

[tony b]

That's why folks like me, who live in the watershed of the McLeod Run have a rain garden to minimize the run-off into the stream. Paid for by a DNR grant no less. Attracks hummingbirds, too, when some of the native flowers bloom.

[whitedj]

For what it's worth, Lee, The USP defined carbon dioxide free water as water that has been "boiled vigorously for 5 minutes and allowed to cool in a covered vessel" I;m not sure if oxygen has a higher affinity for water, but this was the method we used in the lab. The other method we used was putting solutions under vacuum and sonication for 30 seconds, but that doesnt work too well in the home lab.

I do realize this is a couple months late, but just read through this topic. If you are looking for a method to remove dissolved oxygen from water to get to a common starting point try campden tablets. ... its commonly used to control DO levels in industrial processing as too much oxygen will result in corrosion. If you want some reading, enjoy! http://www.scrantonassociates.com/techarticles/soc.pdf

although with the increase of oxygen levels measured its probably not worth bothering with this.