May 2018 05 Petroleum Refining Catalyst Supports Liquid Analytics Laboratory Relocations Facts at Your Fingertips: Activated Sludge Propylene Oxide Production Show Previews: Achema and IFAT www.chemengonline.com Focus on Safety Foundations for Reliability page 42 MAINTENANCE AND RELIABILITY * CATALYST SUPPORTS VOL. 125 NO. 5 MAY 2018http://www.chemengonline.com