To disinfect clean hands or contaminated materials: Take an essential amount (approximately 3 ml) and scrub the entire surface of both hands until dry. To disinfect surgical instruments, place an appropriate amount (approximately 5 ml) in a clean pot and immerse the instruments for 2 minutes. To disinfect the skin before surgery or other invasive procedures: Using cotton, apply an appropriate amount (approximately 3 ml) to the skin and scrub it until dry. To disinfect a wound/wound dressing, apply an essential amount (approximately 3 ml) to cotton and scrub it on the wound until it is dry.