For 24/7 protection for the product's lifetime, this Antimicrobial Paper Roll utilizes Biomaster's patented silver ion technology that inhibits the growth of bacteria without sacrificing paper performance or appearance. Acid-free paper roll is another great weapon in your efforts to keep your work or school environment clean & safe & offers another level of protection against unwanted microbes. Silver is an element found naturally in the environment & has long been regarded as a versatile antimicrobial agent. The silver ions interact with microorganisms & helps prevent their growth, loss of energy production & prevention of DNA replication & new cell formation even on paper. Great for sketching, drawing, banners & displays, this huge, recyclable roll is ideal for use in collaborative environments like offices, schools & restaurants.