Archived Newsletter Article

May 2016

Salad Dressing and “Layered” Cocktails

During a recent cleaning and chemistry course, a student asked a thought-provoking question about solubility, miscibility, and cocktail hour.  I explained that some liquids, like oil and water, are immiscible. That is, they don’t form a “single phase;” the oil is on top of the water. The observant student wondered […]
March 2016

Think Critically, Clean Critically – “Native Advertising” Part 1

To me, “native advertising” evokes the cast of “Madmen” in vintage business suits and starched white shirts sitting cross-legged, somberly thumping on bongo drums with one hand and hoisting diet sodas with the other. Native advertising is not exotic; it is an example of how the line between fact and […]
February 2016

Detecting Contamination with Witness Samples

Process monitoring takes more and more time; and it costs more and more money.  Examples include air in the room and air that is released to the environment, water before during and at the end of the process, assorted liquid chemicals for cleaning, metalworking fluids, other process chemicals, process gasses, […]
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