Permanent laser printable labels, ideal for glassware, surgical instruments, metal and plastic surfaces, trays, blister packs, and other items intended for use in steam autoclaves, ovens, and gamma irradiators. Our autoclave laser labels are durable, inert, weather & water-proof, alcohol-resistant, and have been tested to endure up to 20 autoclave cycles (at 121°C/250°F, 16.5 psi for 20 minutes). Compatible with all major brands of desktop laser printers.