Cart
How Clean is Clean? There is No Looking Back ...
By Dr. Bob Powitz
We banter about the word 'clean', but we are hard-pressed to come up with a good definition that is not subjective. In industries where contamination control is essential for production, 'clean' is quantified in accordance with ISO, USP, NSF, ASTM and other applicable standards. These standards all refer to cleanliness as the amount of particulate matter of a certain size per given area as measured using standard prescribed protocols.In our industry, we can also measure 'clean' objectively. We now have tools such as ATP, ultraviolet and infrared light, pH change, color comparison, swabs and RODAC plates; solvent wipes and particle counters, dyes, and even adhesive tape to lift particulate matter from a surface and count it under a microscope ... just to name a few. The difference, however, is that we do not (and should not) measure 'clean' as a finite number. Rather, our quantitative measurements are measuring trends through the differences between pre- and post- cleaning.
In addition, we have to factor in the evolution of our industry. The 'outsiders', that include our customers are starting to ask questions. They are also demanding 'proof' of the minimization and even the absence of risk as cleaning relates to a healthy environment. In hospitality (including cruise ships), schools, medical and long-term care facilities, the phrase 'how clean is clean?' is taking on a whole new meaning that we will have to address; hopefully more sooner than later. We might as well educate ourselves as much as possible; sort through the latest technologies; embrace ICM and start to demonstrate how well we clean ... without harming our employees and the environment. One thing we cannot do, is look back: The good ol' days are just that.