Manufactured in food safe, tough, durable polypropylene, which meets all U.S. F & D A requirements. Calibrations are raised and integrally moulded. Can be hot-filled at temperatures up to boiling point. Will withstand refrigeration and Autoclave sterilization at 125°C for 20 minutes. Non spilling. The purpose designed pouring spout allows accurate pouring of liquids with differing viscosities and prevents spillage. Resistant to most solvents and chemicals