Clean Source Newsletter Archive

How clean is clean enough? You test for a contaminant. The results indicate contamination level is zero, but the product still fails – it’s as if the contaminant is still there. What happened? Even with a clean manufacturing facility, you can be caught in a detection dust storm, one that […]

Let’s change just one thing: the substrate. The product line remains the same – same size, same shape, same end-use requirements. Do you have to re-evaluate the cleaning process? Absolutely! To head off production shut downs and to avoid losing business, test the new substrate with the current cleaning process […]

You are off to a trade show to find a great critical cleaning process. I’ve run across a few articles about what to do to make the most of a particular show. Planning and conference apps and checklists are a start; but they won’t give you the full benefits. Effective […]

It’s a continual source of amazement, or at least amusement. A manufacturer expends considerable time, engineering effort, and expense in designing a product. The marketing folks tout the product’s advanced superiority in trade publications, conferences, and web sites. Then, the assemblers have to actually build the product. Yield problems arise. […]

The EPA is further scrutinizing cleaning solvents trichloroethylene (TCE), perchloroethylene (PCE, tetrachloroethylene), methylene chloride (MC), n-methyl-pyrrolidone (NMP), and n-propyl bromide (nPB, 1-bromopropane). We discussed EPA actions in the February issue of Clean Source.  Now, the EPA has published new documents relating to these solvents and five other chemicals and has […]

The first Product Quality Cleaning Workshops (PQCW) was at Sam Houston State University in Huntsville Texas, May 16-17. Participants included manufacturers in the areas of automotive, optics, medical, and metal finishing as well as developers of cleaning chemistries, cleaning equipment, and techniques for surface analysis. The workshop confirmed our expectation […]

Specific written instructions about the cleaning process don’t necessarily translate into profitable manufacturing. Consider the wisdom imparted by the classic, mid-century T.V. commercial featuring tuna with good taste (a fish exhibiting faux upper-class behavior) and then touting the superiority of tuna that tastes good.  Successful, profitable manufacturing requires both the […]

Picture a cleanroom. What comes to mind is perhaps a sanctuary, a safe haven, a place of refuge from the rough and tumble world of manufacturing.  The space is carefully designed, certified, and monitored.  The furnishings, the consumables are controlled and have specified attributes.  The room is inhabited by white-garbed […]

Be brave! Read about developments at the EPA. It will be fun – sort of.  Welcome to the giant multi-dimensional Sudoku puzzle in the sky. Regulations, both safety and environmental, are so complex and fluid that they result in a monumental headache for manufacturers.  Two EPA developments may result in […]

Residue is a major concern for manufacturers. Consequences of inadequate residue removal include undesirable appearance (spotting, staining), poor coating adhesion, low yield, and catastrophic product failure.  To successfully remove residue it is useful to understand what that residue is and where it came from.  Also consider: what is it you […]