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One of my clients does injection molding in a certified ISO class 8 cleanroom. The cleanroom is intended to be silicone-free, but we are finding traces of silicone on some of the parts we are checking for silicone. Does anyone know of places silicone could "hide" in a clean room (like, on disposable gloves, hand sanitizer, certain kinds of plastic bins, etc.)? Could also be silica or silicon--our test doesn't know the difference. We are currently testing clean room garments and gloves to see if they contain traces but so far no luck. Thanks!