Took my neighbor to the ER with what turned out to be a kidney stone, he waited for two hours for the staff to find special filters for him to take home and strain his urine to verify the passage of the stone; when they handed him a small packet of them he laughed out loud, they were the identical filters he used at work every day - you see, he is a bodyshop mechanic/painter.
That does look just like the filters we use to strain urine! The hospital costs of all items have to include employee costs from purchase, delivery to Central Supply, filling each floors Pyxis System.
http://www.cardinal.com/us/en/providers/products/pyxis/