Muddy Fork,

Don't buy it! The temperature aspect is O.K. but it really doesn't measure D.O. It calibrates the amount of D.O. that should be present at saturation at that temperature -- not real time D.O. It's deceptive.

To get real D.O. measurements you need to spend at least $250.00.

If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.