Hi all, here we have a LPCVD system. For exhaust management we use a home-made trap positionated at the exit of the furnace. I'm looking for something better than what we actually have. Until now i've found those products: http://www.massvac.com/pages/prod_vacuum_traps.html http://www.mksinst.com/product/product.aspx?ProductID=488&source=search Do you have any other suggestion ? Best regards, Andrea Mazzolari