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Welcome to D.R. Sperry & Company, the premier manufacturer of high-quality filter presses for over 150 years. Our filter presses are used by a wide range of industries, including food and beverage, mining, chemical, pharmaceutical, and more. At D.R. ...

Prevention of biofilm formation involving micro-organisms (algae, bacteria and fungi) and scaling in cooling installations and reservoirs. We only use environmentally friendly products and techniques. Many studies and references are available in ...