The Vapor Trap is available in 2, 4 and 8 liter condenser configurations with a choice of maximum low temperature of -50C or -90C. The trap itself is a stainless steel dewar with mechanically refrigerated walls providing efficient vapor trapping without expendable coolants such as LN2 or dry ice. Can be utilized in vapor streams with vacuum pumps up to 250 liters/minute or 9 standard cubic feet/minute.