These scented formats are made with a variety of fragrance products such as: Scented Coatings that emit scent automatically, Scratch & Sniff (Rub & Smell) which needs activation, scented stickers/labels, and Snap & Burst flap formats that you normally see used for fragrance Ads in magazines.
Wiktionary(0.00 / 0 votes)Rate this definition: 1  prewash(Noun) A quick rinse given to objects before they are washed properly. 2  prewash(Verb) To rinse something before washing it properly.
Unlike media air cleaners that use replaceable filters that plug up when dirty, electrostatic precipitators contain permanent cells that can be washed, either manually or with an included automatic wash system. These permanent cells do not require added static pressure when they get dirty to pull air through them.