GL 45 cap connection system for the easy connection of flexible tubing to the DURAN® GL 45 bottles. The two polyproplylene connectors have angled top and straight underside connectors. Grey polypropylene cap center rotates freely, allowing the bottle to be unscrewed without the need to disconnect the tubing. The cap is ideal for use with soft elastic tubing that has an inner diameter of 6 – 9 mm silicone tubing. An optional venting connector is available with, or without a syringe filter. Highly versatile as the screw cap is based on the standard GL 45 thread. Temperature resistant up to +140 °C. Fully autoclavable and washer-proof. Typical applications: Possible biotech applications include the transfer of sterile media from one container to another using a peristaltic pump.