It is designed to facilitate drip-free pouring from laboratory bottles, ensuring clean and efficient liquid transfer. Manufactured from high-quality Ethylene Tetrafluoroethylene (ETFE), this pouring ring offers exceptional chemical resistance and durability, making it suitable for use with aggressive chemicals and solvents. The red color aids in easy identification and differentiation of media types, reducing the risk of cross-contamination. It is fully compatible with all GL 45 threaded Duran laboratory bottles and can withstand autoclaving processes, making it ideal for various laboratory applications.