Purified Osmium (IMAGE) University of Tokyo Caption Osmium concentration is typically very low, just parts per trillion. Accurate measurements of the element was a huge challenge for the team. Credit CC BY-NC-ND 3.0 Wikimedia Commons/Alchemist-hp Usage Restrictions CC BY-NC-ND 3.0 Wikimedia Commons/Alchemist-hp License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.