Test gas in reusable cylinder ‘Ecomini’ with nitrogen 99.999 vol% (N2). 0.85 litre cylinder size at 70 bar Capacity: approx. 60 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 pack of 100 Esders Connect measurements.