Non-refillable Disposable cylinders are typically used for function testing of gas detection or calibration and analytical equipment where portability is paramount or gas usage is relatively low. Non-refillable cylinders provide a cost effective answer that avoids ongoing rental charges with refillable cylinders and significance advantage to be used in remote or difficult access areas or locations. We have many mixtures already prepared to be filled in a few days in our really convenient disposable cylinders. Please download the catalog of the most common pure gases and mixtures to be used as Zero or Span calibration standards.