MATERIALS PARK, Ohio, May 10 -- ASM International posted the following news from NSF International: NSF, the leading global public health and safety organization in Ann Arbor, Mich., acquired PSILab, Inc., a US-based advanced product testing and consulting laboratory specializing in plastic pipe, pipe materials and other polymeric and composite products. An ISO 17025-accredited state-of-the-art laboratory, PSILab, Inc. is located in Longmont, Colorado and provides laboratory testing, failure a  more