This item must be purchased in multiples of 5 rolls per supplier requirements. Tough-Spots are chemically inert and flexible white and colored polyolefin labels that adhere to most plastics (best performance with virgin polypropylene) as well as glass and metals. These labels withstand temperatures from -320°F to +212°F (-196°C to +100°C) (vapor and liquid-phase nitrogen storage, up to moderate oven temperatures) and can endure sustained humidity and soaking, submersion in boiling water baths, autoclaving, organic solvents, caustic agents and other challenges without peeling, degrading or becoming brittle.