performance-proved instruments for GAS CHROMATOGRAPHY
TWO NEW PERKIN-ELMER GAS CHROMATOGRAPHSWITH DYNATHERMAL FEATUREAS LOW AS $1500 Both have it: the new "dynathermal" con cept of programmed-temperature control that circulates air five times a second. Circle No. 210 an Readers' Service Card
giving you faster heating and cooling of columns —elimination of temperature gra dients—and precise, simple temperature programming. Both are dual-column instruments for base line stability through automatic compensa tion of substrate bleeding in programmed analysis. Both have dual sample injectors to permit independent use of two different column materials when compensation is not needed. Both can perform temperatureprogrammed or isothermal analyses up to 350°C. And both cost far less than compa rable instruments with similar capabilities. M o d e l 8 1 0 : a differential flame detector instrument. Independent control of injec
tion block and column oven temperatures. Uses packed and capillary columns. Costs $1,695.00. Delivery: now. M o d e l 8 2 0 : equipped with a four-filament hot wire detector. Independent control of injection block, oven and detector temper atures. Operates with y 8 " packed columns up to 60 feet in length, or '/," packed col umns up to 30 feet long. Provision for ex ternal sample collection. Price: $1,495.00. Delivery: now. For details on these two low-cost instru ments, a n d other gas c h r o m a t o g r a p h y products, w r i t e to Instrument Division, Perkin-Elmer Corporation, 75 ι Main Ave nue, Norwalk, Connecticut.
PERKIN ELMER
