Gas Cylinder Labels must be tested regularly and maintained properly. Automatic data collection using bar codes to uniquely identify each cylinder is the surest and most cost-effective method to track testing and maintenance of cylinders. The bar code label is the foundation of this system and must be as tough as the environment in which the cylinders live.Inventory control of gas cylinders takes on a special significance due to the safety issues involved with maintenance and testing. Whether they are to be used in a sterile, medical environment or on a welder's mobile service truck, they must be able to withstand tremendous pressures and rough handling. This product has been designed for and tested in numerous gas cylinder applications. Because of this label's ability to resist fading in UV light and be unaffected by moisture, it is an ideal method to permanently code gas cylinders.The BarScan gas cylinder label is a crescent shape allowing it to conform to the curved shoulder of the cylinder so application is easy and wrinkles and gaps are minimized. Initial application of the label is crucial to its long-term survival as wrinkles and gaps can cause failure.