These features allow the Biopatch dressing to inhibit bacterial growth. The Biopatch Protective Disk is a 1" disk with a mm center hole. It has Chlorhexidine Gluconate and works continuously to inhibit bacterial growth for up to 7 days. The dressing can also absorb up to 8 times its own weight in liquid. The dressing has an absorptive, nonirritating and inhibits gram negative and gram positive organism .