This Varian Cary 219 UV-Vis spectrophotometer affirms a 30-year tradition for instrumental excellence...
in a class affordable to all users. Cary 219 can be yours for approximately half that figure. Our all new Cary spectrophotometer is a thoroughbred in every way. It traces its genealogy back to the world's first If you have plans to acquire any new UV-Vis spectropho direct ratio recording UV-Vis spectrophotometer, the tometer, there's no reason to accept less than a Cary. Cary model 11. It inherits the precision, versatility and Be sure you are fully informed on the model 219's per research grade aura which made the models 14, 17/17D formance characteristics, accessories capabilities and and the model 118 legend among the w o r l d ' s ^^ ^_ operating ease—all typically Cary. foremost spectroscopists. f H^W Request the Cary 219 information package today! But when it comes to purchase price, the model 219 m " l f breaks cleanly with the past. There's no need to an- Λ \Γ ) \ I Varian Instrument Division, 611 Hansen Way, Box W # D-070, Palo Alto, CA 94303. ticipate budget submittals in the $25K range for ^ ^ this unequalled performance. With all of its preci Circle 220 for. brochure, performance proofs and sion, versatility and elegant operability, the Varian price list. Circle 221 our tech rep will contact you.
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'Prices slightly higher outside USA
News Varian low-noise, high-sensitivity PMT's . . .
More choke in m-V PMT's. Varian offers a wide selection of high performance semi conductor cathode photomultiplier tubes for photon counting applications in the UV, visible and near IR. VPM-164: Varian's lll-V photocathode end-window tube for photon counting applications where low dark counts and high sensitivity are of the greatest importance.
Phosphate. E. C. Juenge, J. F. Brower. 10:00—Intermission. 10:20—70. Determination of Coumestrol in Soybean Extracts by HighPerformance Liquid and ThinLayer Chromatography. G. L. Lookhart, B. L. Jones, K. F. Finney. 10:40—71. Use of the S-Pyridylethyl Derivative for Determination of Cysteine During Protein Sequenc ing. B. L. Jones, G. L. Lookhart, A. S. Mak. 11:00—72. On Stream Computer-Con trolled Gas Chromatograph for the Analysis of Interreactor Catalytic Reformer Products. J. H. Stockinger, R. B. Callen, W. E. Kauf man. 11:20—73. Total and Organic Carbon Analysis of Fluvial Sediments. M. M. Reddy, E. Canelli, K. V. Krishnamurty. THURSDAY AFTERNOON SECTION A Sheraton-Anaheim
VPM-159: A less expensive relative of the VPM-164 with a V2" side window for extremely low-light-level applications.
VPM-192M/MB: Low dark count end-window PMT's with a choice of large GaAs narrow or broad spectrum cathodes for retrofitting older instru ments for higher performance and for new designs.
Typical Quantum Efficiency of various cathode types.
Select the performance you need, then contact Varian, LSE Division, 601 California Avenue, Palo Alto, California 94304. Telephone (415) 493-4000, extension 3608 or 3094.
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224 A · ANALYTICAL CHEMISTRY, VOL. 50, NO. 2, FEBRUARY 1978
Divisional Instrumentation Award Symposium M. Parsons, Presiding 2:00—74. The Development of a Scan ning Echelle Monochromator. M. L. Parsons, A. R. Forster, D. L. An derson. 2:30—75. Study of the Mechanism of Formation of Alkaline Earth Phos phate Compounds by Atomic Ab sorption Inhibition Release Titra tion. D. Stojanovic, J. D. Winefordner, J. Bradshaw. 3:00—76. Recent Applications of Co herent Anti-Stokes Raman Spec troscopy. B. W. Smith, A. Eckbreth. 3:30—77. The Future of Fluorescence Immunoassays. C. M. O'Donnell, S. C. Suffin. 4:00—78. Recent Developments in Multicomponent Analysis by Room Temperature Phosphorimetry. T. Vo-Dinh, R. B. Gammage. 4:30—79. C. Veillon. SECTION Β
Sheraton-Anaheim Symposium on Analysis of HighPurity Materials H. J. Keily, Presiding 2:00—Introductory Remarks. H. J. Keily. 2:05—80. X-ray Excited Optical Lu minescence and Its Applications to High-Purity Material Analyses. V. A. Fassel, E. L. DeKalb, A. P. D'Silva. 2:50—81. Determination of Impurities
