Screw Capped Glasswares for Laboratory maintains free interchange between the atmosphere inside and outside the mouth. The Screw Capped Glasswares completely satisfies the gas requirements for aerobic culture and is easily attained by slightly loosening the caps. Screw Capped Glasswares can withstand repeated autoclaving and have been made from durable glass. Screw Capped Glasswares for Laboratory come with caps which are made of pure silicone rubber with PTFE facing and can be availed in different models with different specifications.