Gas Phase Filtration
May 5, 2026, Tuesday
8:00 AM – 10:00 AM ET, USA

$USD 350
$USD 175 (Member Only )
Course Objective
The objective of this course is to help you get an overall understanding of gas phase filtration market and technologies for air purification in terms of removing harmful gases, VOCs, and odors, etc. It covers basic principles, different types of adsorbents and their functions in use, delivery systems of adsorbents, products in different application markets, such as HVAC, odor control, environmental exhaust, toxic gas protection, and the product evaluation methods and standards. The new developents, opportunities and trends for future development will be also discussed.
Course Outline
1. Introduction
What is gas phase filtration?
b. Principles of gas phase filtration
c. Gas phase filtration market
2. Science and Fundamentals
Types of adsorbents
Functions of each type of adsorbent
Selection of right type of adsorbent
Guideline to determine how much adsorbent to use
3. Delivery Systems of Adsorbents
Deep beds
Cassettes and trays
Honeycomb
Pleated filters
4. Applications and Products on Marketplace
HVAC
Odor (Odour) control
Environmental exhaust
Toxic gas protection
Others
5. Product evaluation and Testing Standards (Dr. Guillaume Gallet)
Adsorbent
Road vehicle air filters
HVAC products
6. Recent Developments, Opportunities and Trends (panel discussion)
ISO 10121-3, Classification system for molecular filters for general ventilation (Dr. Guillaume Gallet)
Recent development, opportunities and trends (Panel)
Instructor Biography

Mr. Kevin Jameson
Instructor
Mr. Jameson is the founder of PureAir Filtration, a company specializing in gas-phase filtration. He has more than 30 years of experience in the gas-phase air purification market, including 20 years with PureAir, and holds four patents in the field. Kevin began his career with Torrington Bearings, later moved into the automotive industry with Siemens, and then spent five years at Purafil as Vice President of Operations before founding PureAir Filtration in 2004. In 2025, he sold this company to CleanWater1, a leader in the water and wastewater technology space. He is an active member of the WEF Odor and Air Pollutants Committee, serves on the International Society of Automation committee focused on protecting electronics from pollution. He also serves on WFI Advisory Board. He earned both his B.S. and M.S. in Engineering from the Georgia Institute of Technology in Atlanta, Georgia (USA). He enjoys sailing and beekeeping.

Dr. Guillaume Gallet
Instructor
Guillaume Gallet is President of the Molecular Contamination Control (MCC) Division at Camfil. Dr. Gallet has more than 22 years’ experience in the field of air filtration, having occupied diverse positions in R&D, product management and business management in Europe and Asia. Dr. Gallet has a chemical engineering degree from ENSCM, France and an academic background in analytical chemistry and polymer technology from KTH, Sweden. His main area of expertise cover airborne molecular contamination for semiconductors, corrosion control applications, filtration of harmful gases from process exhaust, or indoor air quality related topics for people protection.
Dr. Gallet has been an active speaker at contamination control conferences and SEMI events throughout the last 2 decades. He holds several patents on regenerable filtration technology and monitoring devices.

Mr. Chris Muller
Panelist
Mr. Muller, ASHRAE Distinguished Lecturer, High Purity Segment – Gas-Phase, AAF International, is recognized globally as an expert in indoor/environmental air quality, filtration and enhanced air cleaning systems, and gas-phase air filtration technology with demonstrated competencies in product development and applications. With more than 30 years in the filtration industry, he has written and spoken extensively on these and related topics with more than 250 articles and peer-reviewed papers, more than 150 seminars, and 8 handbooks to his credit. He has been a driving force on multiple industry association and technical committees, improving awareness and standards in the industry, especially in the field of gas-phase air filtration and indoor environmental air quality. He co-authored ASHRAE’s Position Document on Filtration and Air Cleaning, ASHRAE Guideline 42P: Indoor Air Quality in Commercial and Institutional Buildings, and ASHRAE Standard 62.1 User’s Manual.
Panelists
Dr. Cédric Vallet is Head of Product Management & Business Development for the Filtration Division at Ahlstrom (France). He earned his Ph.D. from the University of Rennes in 2006 and an Engineering Master’s degree in Chemistry from ENSCR in 2002. With more than 19 years of experience in filtration, he has held key roles across R&D, Sales, and Marketing, with a focus on air and liquid filtration solutions for transportation applications. In his current role, Dr. Vallet leads global efforts to advance sustainable filtration materials and solutions. A strong advocate for filtration education, he also serves on WFI Advisory Board.
Dr. Naren Vitchuli, Lead Scientist, Hollingsworth & Vose, USA
Dr. Vitchuli is the Lead Scientist at Hollingsworth & Vose, USA for developing nonwoven filter media for gas phase filtration. Dr.Vitchuli has in-depth knowledge about gas adsorbents, their incorporations in nonwoven media and their gas adsorption testing. Since 2016 at H&V, Dr.Vitchuli has developed nonwoven media products for air, liquid and gas phase filtration, gathering expertise in melt blown, carding and fine fiber technologies. Prior to joining H&V, he started his career in a startup company as a scientist, developing functional polymer fiber materials for cell culture, battery separator and food additive applications, through liquid shear process. Dr.Vitchuli received his Ph.D. degree in Fiber Polymer Science in 2011, and did Post-Doctoral Fellowship in Chemical & Bio-Molecular Engineering 2011- 2013, both from North Carolina State University. He has several peer-review journal publications and patents applications in his academic and professional career.
Mr. Nick Agopian is President of Reviveaire, USA. With 30+ years of Filtration, HVAC & energy-recovery experience, Nick focuses on Indoor Air Quality and improving the human condition indoors. Nick’s has held executive positions of VP for various businesses like Circul-Aire, Dectron Internationale, President and General Manager at SEMCO, a Fläkt Woods company, and Vice President at RenewAire. Nick is highly involved with ASHRAE,where he sits on numerous technical committees, such as ASHRAE 62.1 & 62.2, ASHRAE Position Document - Human Health and Wellness in the Built Environment, TC 2.3, SPC 145P, TRG4.IAQP, TG 9, etc. He’s also served on a special board for filtration part of the National Research Council of Canada (NRC), Additionally, he served on the Board of Directors for the Missouri Innovation Center’s Life Sciences Business Incubator, Board of the local Chamber of Commerce, and Chairman of the Board for the Home Ventilating Institute. A committed lifelong learner, Agopian’s undergrad was in Mechanical Systems Engineering from Vanier, Quebec, Canada, and an International M.B.A. from Duke University’s Fuqua School of Business.
Mr. Al Vatine is a globally well-recognized expert in various air filter testing and evaluation. He studied biology at Macalester College and graduated in Pathology at the University of Minnesota, USA. He started LMS Technologies in 1996 in response to the increasing demand from the industry for filter measurement. Al has over 35 years of experience in comprehensive air filtration testing, test equipment design, research and development. The company is establishing the core facility for fiberization, filtration, nozzle design, and filtration research and development. They have successfully designed the largest test system with a capacity of 25,000 CFM and built-in back pulse, rain, sand storm, ice pulse removal, 99% humidity, and saltwater migration testing capability. This system provides realistic test data for gas turbines and large engine intake filters used in the aerospace and defense industry.