Test gas 5-Gas Dräger Mix in reusable bottle ‘Ecomini’ with 2.5 vol% methane (CH4) 15 ppm hydrogen sulphide (H2S) 50 ppm carbon monoxide (CO) 2 vol% carbon dioxide (CO2) 18 vol% oxygen (O2) in nitrogen (N2). 0.85 litre bottle size at 70 bar Contents: approx. 60 litres Please return the empty bottles to Esders GmbH after use. We will process 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.