'Defective Do Not Use' Medical Labels are designed to mark defective samples or equipment. They have lines to enter the problems with the item, as well as the date the issue was noticed. Simply place these bright orange 'Defective Do Not Use' healthcare labels on defective items. The medical grade adhesive will ensure they stick. Defective Do Not Use Labels Details 500 Labels Per roll 2" x 1" Orange Labels Aggressive Permanent Adhesive Adhesive Range of -65 to 220 Fahrenheit