Calibration gas cylinders provide a convenient and cost-effective way to utilize calibration gas mixtures. Available in steel and aluminum. Steel cylinders are used for non-reactive gas mixtures as well as pure gases such as argon, helium and nitrogen. Aluminum cylinders offer industry leading stability for reactive mixtures in a lightweight, portable package. Typical components may include ammonia, chlorine, hydrogen cyanide, hydrogen chloride, hydrogen sulfide, nitric oxide, nitrogen dioxide, sulfur dioxide and phosphine. Also available are the innovative ecosmart® cylinders. An affordable way to GO GREEN, the ecosmart family of cylinders are aluminum, portable, hold pure and mixed gases and fit comfortably into a standard carrying case. Offered in a 44, 58, 66 or 116 L. Note: Many mixes available upon request.