Introduction Before going into a detailed discussion of the F:M (food-to-mass or food-to-microorganism) ratio I want to let you know...

Oxidation Reduction Potential (ORP) Measuring the oxidation reduction potential (ORP) is such an easy, insightful test to perform, it’s a...

Level 1: Oxygen Uptake Rate—An Introduction Whenever I evaluate a biological treatment system there are two sets of tests I always run:...

Refinery Wet Gas Scrubber This may seem a little odd, perhaps, but there is one unit process in particular that I really enjoy evaluating...

Adenosine Triphosphate (ATP)—An Introduction I’ve stated previously (OUR Level 1 Testing page) that whenever I evaluate a biological...