New Products Chemicals
Chemically Mod ified Surfaces in Catalysis and Electrocatalysis
Membrane Filters
Automate all the sample loading for your HPLC, AA, flame, UV/Vis.. .whatever A n ISIS A u t o S a m p l e r f r o m ISCO gives you low-cost a u t o m a tion for practically any analytical instrument accepting liquid sam ples. Y o u ' l l get increased throughput with better repro d u c i b i l i t y at a f r a c t i o n of t h e o p e r a t o r ' s t i m e . A n d ISIS can w o r k u p t o 24 h o u r s a d a y , n e v e r a s k i n g f o r a d a y off. To a u t o m a t e any i n s t r u m e n t w h i c h can call f o r a s a m p l e , all y o u n e e d is a basic ISIS at o n l y $2495. W i t h i n t e g r a l m i c r o p r o c e s sor c o n t r o l l e r f o r o t h e r i n s t r u m e n t s , complete a u t o m a t i o n still costs y o u o n l y $2845. A p i p e t w a s h s t a t i o n is o p t i o n a l . The HPLC Autoinjector in cludes a separate controller which can be p r o g r a m m e d f o r p r a c t i c a l l y any operating parameter, includ i n g r e i n j e c t i o n of t h e s a m e s a m p l e u p to 9 t i m e s . F o r $ 4 9 9 5 , y o u can have e v e r y t h i n g y o u n e e d to quickly, easily automate your present chromatograph. Send now for literature e x p l a i n i n g h o w ISIS can h e l p a u t o m a t e your lab. Or phone toll-free: [800] 2 2 8 - 4 2 5 0 . I S C O , B o x 5347, Lincoln, N E 68505.
GN-HC Metricel membrane recovers fecal coliform bacteria from chlorinetreated water samples and provides su perior flow rates and recoveries of bac teria injured or stressed by chlorine treatment. It is available in a 47-mm di ameter and 0.7-μιτι pore size. Gelman Sciences 425
Lab Cleaner Versa-Clean liquid concentrate is a complex colloidal compound meant for use in both heavy and delicate applica tions. It is safe for almost all surfaces, including plastics, paints, rubber, fab rics, and metals, and it inhibits corro sion. Fisher Scientific Co. 426
Heparin for Protein Purification Affi-Gel Heparin is an affinity chroma tography support for purifying a range of proteins. It provides one-step purifi cation of coagulation factors and other plasma proteins, polynucleotide poly merase, nucleases, lipase, lipoproteins, and proteases. Bio-Rad 427
Gas Purification Catalyst Catalyst R3-11 removes oxygen from gases and liquids, and hydrogen and carbon monoxide contained in inert gases are oxidized. It also completely removes sulfur compounds. It can be regenerated as often as required. Chemical Dynamics Corp. 428
ISCO
192
ACS Symposium Series No. 192 Joel S. Miller, Editor Occidental Research
Corporation
Based on a symposium jointly sponsored by the Divisions of Inorganic, Analytical, and Petroleum Chemistry of the Amer ican Chemical Society. The state of the art of the chemical modification of surfaces The principal focus is on modification of materials for catalytic purposes and the modification of organic and-inorganic electrode materials for electrocatalytic and photoelectrochemical applications. The use and limitations of several analyt ical techniques currently employed for characterization are also discussed. These methods include Electron Spec troscopy for Chemical Analysis, and NMR, IR, and UV-visible spectroscopy. An emerging interdisciplinary area of chemistry for surface scientists, electrochemists, catalytic chemists, polymer chemists, material scientists, solid state chemists, scientists involved with interca lation, silicon chemists, organometallic, organic, analytical, and inorganic chemists.
Septa
CONTENTS
Type M Septa for use with low-temper ature GCs at or below 200 ° C are avail able. These septa are ideally suited for use with automatic injectors because they are easily penetrated and have ex ceptional resealing ability. An average of more than 300 injections per septum can be expected. Applied Science Divi sion 429
Chemically Modified Surfaces in Catalysis · Poly(styrene-divinylbenzeneJ-Supported Catalysts · Ho mogeneous Rhodium(l) Catalyzed Alkene Hydrogena tions · Reactive Organic Functional Groups · Polypyrrole Film Electrodes · Second Order EC Catalytic Mechanism · Semiconductor Photoelectrodes · Soli tion Reactivity Properties · Metallopolymer Films on Electrode Surfaces * Chemical Modification of TiOa Sui faces · Electrochemistry of Silane-Derivatized Iridium « Improvements in Photoelectrochemical and Electrochromic Reactions · Derivatized Layered M(IV) Phos phonates · Intercalation of Molecular Catalysts in Layered Silicates · Fischer-Tropsch Synthesis · Reac tivity of Catalysts Derived from Organometallics · Silacrowns
Isoelectric Point M a r k e r s
Instruments with a difference
Chemically Modified Surfaces in Catalysis and Etectrocalalysis
Colored protein markers are available in a narrow-range kit (5.65-8.3). Marker kits provide the researcher with pH measurement of proteins in polyacrylamide gels as well as other electrophoretic media. Gallard-Schlesinger Chem ical Mfg. Corp. 432
CIRCLE 107 ON READER SERVICE CARD
1282 A · ANALYTICAL CHEMISTRY, VOL. 54, NO. 12, OCTOBER 1982
301 pages (1982) Clothbound US & Canada $36.95 Export $44.95 LC 82-8731 ISBN 0-8412-0727-! Order from: Distribution Office — 47 American Chemical Society 1155 Sixteenth St., N.W. Washington, D.C. 20036 or CALL TOLL FREE 800-424-6747 and use your credit card.
