An electromagnetically detectable adhesive strip | Waterproof | Ideal for the kitchen area | The best way to use these bandaids is to dry your hand first and then cover the wound | Used by the food industry | Non-stick wound pad | Visually and electromagnetically detectable | St John Blue Sterile Adhesive Strips 50 pack are strong, highly visible, metal detectable and can be used in manufacturing industries that are required to scan for foreign objects