• Withstand freezer temperatures down to -196°C (liquid and vapor phase nitrogen), boiling water baths (100°C), autoclaving and moderate oven temperatures (150°C) • Chemically inert adhesive and labels resist most organic solvents and caustic agents. They adhere to plastics*, glass and metals without cracking, peeling or degrading • Label sheets are specially top-coated to readily accept laser printing. Heat-resistant, stay-flat sheets will not jam laser printers • Made with a flexible, polyolefin† label material and acrylic adhesive. This unique combination expands and contracts together with temperature fluctuations resulting in a strong adhesive bond • Rainbow packs contain 4 sheets each of Blue, green, Orange, Red and Yellow