Surgimedics offers a unique filtration system that reduces the cost per procedure. A removable pre-filter is used in conjunction with our VLSI Grade ULPA filters to ensure a long filter life. Unlike some competitive models, our ULPA filter life is not based on a set time interval. The life of our filters is solely dependent upon how efficient the filter is during use. With a press of a button, our surgical smoke evacuators will notify you if the filter is no longer efficient and requires replacement.