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Continue to ChatAtlas Copco is the first manufacturer to have its vacuum pumps checked for traces of oil by TÜV Rheinland in accordance with the ISO 8573-1 standard. Link: https://www.atlascopco.com/en-et/vacuum-solutions/vacuum-news-and-customer-stories/clean-and-environmental-friendly-vacuum-pumps-certified-by-tuv-rheinland