TRACOR, Inc

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Dual Headed Flame Photometric Detector for Simultaneous Three-Way Response! (P,S and normal FID mode) The Melpar FPD has been further improved with the addition of an optional second photometric channel A single hydrogen-rich flame is used for simultaneous observation of phosphorus and sulfur emis­ sions plus ionization response with a standard target. Careful calcu­ lation of response ratios can assist in the absolute identification of Ρ and S containing compounds. The new detector is based on the dual detector described in Anal. Chem. 4 0 , 1 4 4 8 , [19683 by M.C. Bowman and M. Beroza.

FPD . . . already established for hundreds of analyses: • PESTICIDES · PETROLEUM FRACTIONS # AIR POLLUTION • NATURAL GAS β FLAVORS · PHOSPHOLIPIDS

IMow operable at 2 5 0 C to bring a new dimension to more analyses. For most successful operation, the FPD should be used with an all-glass system -such as "the u l t i m a t e c h r o m a t o g r a p h : " The MICRO TEK MT220

For further information, contact TRACOR, Inc., Analytical Instruments, 6 5 0 0 Tracor Lane, Austin, Texas, 7 8 7 2 1 . Phone: [ 5 1 2D 9 2 6 - 2 8 0 0

i Detectors Make the Difference...TRACOR AA-132 Circle No. 73 on Readers' Service Card

ANALYTICAL CHEMISTRY, VOL. 41, NO. 14, DECEMBER 1969 · 39 A