Peracetic acid monitoring in the real world

Well-known as a disinfectant and sanitizer, PAA is produced by reacting acetic acid and hydrogen peroxide with an acid catalyst. PAA is always sold in stabilized solutions containing acetic acid, hydrogen peroxide, and water. Thus, the two other compounds are always present when PAA is being used. As it happens, acetic acid and hydrogen peroxide…

Unusual interferences

An introduction to the notion of interferences (those other gases in the environment that might respond in your instrument, thus “interfering” with your measurement of the target analyte), is given here. We continue the discussion on interferences by considering what can be done when you are confronted with an interference that is “unusual,” that is,…

Low concentration gas detection

One definition of “low concentration” would put it at doing work below 1 ppm. Another would consider that any measurements below the usual regulatory values would be deemed “low concentration.” Either way, more care has to be taken in such work. Here are a few tips: 1.     Be very sure of your calibration standard. While technology…