Pond Boss Forums AERATION Systems questions Aerate correctly?

Bill Cody
The Hach test kit you refer to only has a range of 0 to 2.4 ppm and is used primarily to test boiler water where low DO is good. Drop count titrations can be very accurate but kits in the range a pond tester might need should range from 0 to 15 parts.
This past winter I tested bottom water using a Van Duren sampling bottle to acquire bottom water, it is tricky to say the least and obtaining a sample from the sample bottle without unintentional aeration of the sample can be difficult. It took me over a dozen tests until I had the technique where I could draw 3 consecutive samples from the bottle without increasing the DO levels. It is easy to screw up and get erroneously high numbers.
I love my new YSI and I'll report to you in the fall a seasons data from my aerated pond.