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 and safe and offers another level of protection against unwanted microbes. Silver is an element found naturally in the environment and has long been regarded as a versatile antimicrobial agent. The silver ions interact with microorganisms and helps prevent their growth, loss of energy production and prevention of DNA replication and new cell formation even on paper. Great for sketching, drawing, banners and displays, this huge, recyclable roll is ideal for use in collaborative environments like offices, schools and restaurants.