Posted By Ayman Asfour I am searching for the standards that controls the safe handling of compressed gas cylenders. information about testing, filling, and disposal will also be useful worm regards ayman

Posted By Jane Blunt Dear Ayman In the UK, most portable and transportable gas cylinders are owned by the Gas Companies - they sell you the gas and rent you the cylinder. If this is the case, the periodic pressure testing of the cylinder is the responsibility of the gase company, and therefore you need not worry about it. If on the other hand you own the gas cylinders, then they are transportable pressure vessels and you need to study the regulations!! Jane