Test gas 5-gas mix for MSA devices in reusable "Ecomini" cylinder, containing: 20 ppm hydrogen sulphide (H₂S) 60 ppm carbon monoxide (CO) 1,45% by volume methane (CH₄) 2,5% by volume carbon dioxide (CO₂) 15% by volume oxygen (O₂) in nitrogen (N2) Cylinder capacity: approx. 0,85 litres at approx. 37 bar Contents: 31,5 litres Connection: IT 5/8“-18-UNF valve connection Please return the empty cylinders to Esders GmbH after use. We will recondition and refill them. As a thank you for your contribution to protecting the environment, you will receive a free package of 100 Esders Connect measurements.