New Products tammetry and polarography; cyclic volt a m m e t r y ; c u r r e n t - s a m p l e d (Tast) p o l a r ography; chronocoulometry; electroc a p i l l a r y c u r v e s ; a n d all s i n g l e - e l e c trode stripping methods. BAS 414 Isaac/Apple Work
The Analytical Approach
Chromatography
Station
Model 42A Chemistry Module features C h r o m a t e x t s o f t w a r e . T h e s y s t e m is c o m p a t i b l e w i t h either t h e A p p l e II or lie a n d c o n n e c t s to any e x i s t i n g GC or LC. C a p a b i l i t i e s i n c l u d e d u a l - c h a n n e l integration, chromatogram storage and r e c a l l , f l e x i b l e data m a n i p u l a t i o n , short or l o n g f o r m p r i n t o u t s , 16 bit A / D c o n v e r s i o n , a n d input signals f r o m 1 m V f.s. to 10 V f.s. C y b o r g C o r p . 4 1 5 Model 504 Autosampler automatically injects as many as 102 samples into a column for HPLC analysis. It can inject samples from 1 to 100 μL· or inject 1 μL· from a sample as small as 10 μL·. It stores up to nine programs for automatic retrieval. In most cases, accuracy is 1 % of syringe volume, and repeatability is 0 . 5 % of syringe volume. Beckman 404
Electrochemical Analyzer A n a l y z e r o f f e r s o v e r 2 0 t e c h n i q u e s that c a n be s e l e c t e d f r o m a display m e n u . T h e i n s t r u m e n t is a b l e to p e r f o r m m a n y c o m m o n electroanalytical techniques, including: differential, normal and re verse pulse, square w a v e , and ac vol-
Colorimeter X L - 8 2 5 is suited for c o n t a c t and n o n contact measurements. The lightweight o p t i c a l s e n s o r w e i g h s < 2 lb a n d f e a t u r e s a 5-ft fiber o p t i c c a b l e that e n ables remote measurement and flexibil ity of m o v e m e n t . In c o n f o r m a n c e w i t h A S T M E-97, the i n s t r u m e n t has a t w o b e a m , 4 5 ° / 0 ° geometry. Pacific Scientific 416
For m o r e information on listed items, c i r c l e t h e appropriate numbers on one of our R e a d e r s ' S e r v i c e C a r d s
J e a n e t t e G . G r a s s e l l i , Editor Brings together 52 papers from The Analytical Approach column in ANALYTICAL CHEMISTRY. Provides unique approaches to analytical science and focuses on real-world problems. Discusses topical and interesting subjects s u c h a s t h e a n a l y s i s of t h e J F K assassination bullets, Mt. St. Helens ash, flavor changes in f o o d , a n d f a i l u r e m e c h a n i s m s in s p a c e c r a f t p a r t s . W r i t t e n in a " p o p u l a r " s t y l e y e t is h i g h l y informative. Will serve as a t e a c h i n g a i d in h i g h e r e d u c a t i o n o r a s a g u i d e in c o r p o r a t e t r a i n i n g programs on analytical capabilities. CONTENTS
Sections include: • Production Processes • Products • Environmental
• Toxicity • Forensic • Miscellaneous 240 pages (1983) Clothbound LC 82-22618 ISBN 0-8412-0753-4 US & Canada $29 95 Export $35.95 A paperbound student edition is available in bulk quantity. For price and ordering information, call toll free 800-424-6747.
OE-300 NMR System is based on a superconducting 300-MHz magnet and features synthe sizer-based frequency control, homo/heteronuclear proton decoupling, a high-speed pulse programmer, a switchable proton-carbon probe, and menu-driven software. The system also includes a color raster display, a high-speed eight-pen plotter, and dual 8-in. floppy disc drives. Nicolet 403
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ANALYTICAL CHEMISTRY, VOL. 55, NO. 6, MAY 1983 · 633 A
