Nissan Cohen is a worldwide expert in total organic carbon (TOC) in high purity, ultrapure, reclaim and recycle water systems, with profound expertise in instrumentation, automation and organic contamination oxidation systems using ozone, UV, ion exchange and catalysts. He is an accomplished writer of over 30 technical articles published in Ultrapure Water, A²C², Pharmaceutical Technology, Pharmaceutical Engineering, Semiconductor International, The Journal of the Institute of Environmental Sciences and Technology. Twice nominated for PE’s “article of the year,” he is a contributing author to the ISPE Baseline® Guide for Water and Steam and Water and Steam Commissioning and Qualification Good Practice Guide. Cohen is a Member of ISPE, technical editor of the Journal of the Institute of Environmental and Science Technology (IEST), technical reviewer of PE, former chairman of the Water and Steam Forum of ISPE, founder/chair of the discussion forums of ISPE, former chairman of ISPE’s Membership Services Committee and Website Committee, co-founder of ISPE’s Rocky Mountain Chapter and former member of the Technical Advisory Board of A²C² magazine. Cohen graduated from the University of Wisconsin and Ruppin Institute with a degree in agriculture.