LDST (IMAGE) NASA/Johnson Space Center Caption The Long Duration Sorbent Testbed locker was launched to the International Space Station on July 18 to test new materials for more efficient air filtration systems that would be used on longer flights into deep space. Credit NASA Usage Restrictions None 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.