The cylinder is empty or contains one of the following gases or gas mixtures:
- IG-01 (argon)
- IG-55 (nitrogen and argon)
- IG-100 (nitrogen)
- IG-541 (nitrogen, argon and CO2)
The cylinder is used alone or as part of a cylinder battery.
The equipped cylinder — including the cylinder, its valve, and its protective cap — has been manufactured in compliance with the European directive regarding transportable pressure equipment (TPED 2010/35/EU). The valve and the cylinder are marked π (pi).
A cap ensures protection of the valve during transport, handling and storage of the cylinder.