Labels on 8" x 11" sheets stay flat and will not jam in laser printers. Chemical-resistant, flexible, polyolefin labels can withstand conventional and cryogenic freezer storage (vapor and liquid phase nitrogen storage at -196°C). They adhere strongly to plastics, glass, and metal and can withstand autoclaving, boiling water baths, or dry heat up to 150°C without peeling, cracking, or degrading. Twenty sheets of labels per box.