Briefs
DR/3000
Aluminum-Coated Cell for Fluorescence Signal Enhancement
A Breakthrough in Spectrophotometers...
Precolumn Labeling Device for Liquid Chromatography --
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HACH ...Microprocessor Control For Only $ 2 9 9 5 The new DR/3000 Spectrophotometer brings greater accuracy and convenience to colorimetric analysis with these outstanding features: Versatile Testing: Prompting software lets you r e a d colorimetric test results directly in c o n c e n t r a t i o n with four o p e r a t i n g m o d e s : • Manual p r o g r a m s easily establish linear calibrat i o n s from r o u t i n e a b s o r b a n c e a n d % T measurements • A "best fit" p r o g r a m c o m p u t e s a linear calibration from multiple d a t a points • O t h e r stored p r o g r a m s assist in performing nonlinear c a l i b r a t i o n s • Plus, p r e - p r o g r a m m e d calibrations a r e include d for over 60 important water quality tests using Hach reagents
2466
Susumu Honda* and Hiroko Kuwada, Faculty of Pharmaceutical Sciences, Kinki University, Kowakae, Higashi-osaka, Japan Anal. Chem., 55 (1983)
Correction. Liquid Chromatography/Proton Nuclear Magnetic Resonance Spectrometry Average Composition Analysis of Fuels
2468 J a m e s F. Haw, T. E. Glass, and H. C. Dorn*, Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Va. 24061 Correction. Computer-Assisted Optimization for Flow Injection Analysis of Isoprenaline 2468
D. Betteridge*, Timothy J . Sly, and Adrian P . Wade, Department of Chemistry, University College Swansea, Swansea, West Glamorgan, SA2 8PP, United Kingdom, and J o h n E. W. Tillman, Fisons Pic. Pharmaceutical Division, Science and Technology Laboratories, Loughborough, Leicestershire, LE11 0QY, United Kingdom
Author Index
2469
Keyword Index
2497
"A"-Page Index
2507
Microprocessor Control: Precise a n d rapid k e y b o a r d control of operations insures user a c c u r a c y w h i l e r e d u c i n g analysis t i m e . A u d i b l e t o n e s distinguish b e t w e e n a c c e p t e d a n d u n a c c e p t a b l e commands. D i g i t a l R e a d o u t : S e l e c t from t h r e e r e a d o u t modes—absorbance, % transmittance or c o n c e n t r a t i o n — a l l in 4-digit display. A d v a n c e d S i n g l e B e a m Optics: A u n i q u e d o u b l e p a s s g r a t i n g m o n o c h r o m a t o r yields a full 325 to 1000-nm wavelength r a n g e , ± l - n m a c c u r a c y , 9-nm s p e c t r a l b a n d w i d t h a n d less t h a n 0 . 1 % stray light. C a l l or write for m o r e information. U.S. domestic list price
Hach Company HACH P.O. Box 389 Loveland, CO 80539
2464
A.J.M. Vermorken», C.M.A.A. Goos, and M.W.A.C. Hukkelhoven, Research Unit for Cellular Differentiation and Transformation, University of Nijmegen, Geert Grooteplein Noord 21, 6525 EZ Nijmegen, The Netherlands, and M. Coelen, Technical Workshop of the University of Nijmegen, F.C. Donderslaan 2, 6525 GJ Nijmegen, The Netherlands Anal. Chem.,55 (1983)
Call toll-free 800-525-5940 (Colo. 800-227-4224)
CIRCLE 98 ON READER SERVICE CARD
1408 A • ANALYTICAL CHEMISTRY, VOL. 55, NO. 14, DECEMBER 1983
