White. Manufactured from paper with special resin adhesive that resists to moisture and most solvents. Can be used between -5 to 110 °C temperature range. Also withstands steam autoclaving cycle and gamma irradiation. Adheres to any clean surface including PTFE coated surfaces and peels off without leaving any sticky residue. Accepts writing from almost all pen types such as pencil, ball point pen, solvent ink marker etc. Markings remain absolutely legible under the most demanding laboratory conditions. Rolls of 30 m.