The WatchGas gas bottles offer absolute convenience and mobility. The calibration gases are perfect for providing limited volumes. The gas or gas mixture is the ideal solution for the calibration of your portable and/or fixed gas detector device. In our assortment, you can find various types and sizes, of which the 34Ltr, 58ltr, 116ltr (aluminum), and more like the more common 12ltr, 60ltr, and the 103ltr (steel).