New Products Computer Interface for Thermal Analysis
Wine Production Technology in the United States
RS-232-C includes a data logger and terminal for two-way communication between the company's 1090 Thermal Analyzer and nearly any computer or terminal. The RS-232-C permits tests to be run directly from the keyboard of the thermal analyzer or remotely from a computer. Meanwhile, information can be sent from the 1090 to an external computer in a wide range of data rates and formats. Data transmission can be started or stopped on demand. Du Pont
416
Centrifuges
We're the One. CATALOG you need for Gas Chromatography. Our new 23-GC Catalog contains the latest products in four easy-to-use sections: — Gas Chromatography Supplies ' Gas Chromatography Reagents • Biochemicals and Standards • Chemical Adsorbents Also look for our 23-LC Catalog soon! If you are already receiving the APPLIED SCIENCE Newsletter, your catalog will be mailed automatically. Call if you are not on our mailing list. APPLIED SCIENCE is now consolidated in one location to give you the finest quality, delivery, and technical service available.
APPLIED SCIENCE Applied Science Division Milton Roy Company P.O. Box 440, State College, PA 16801 Phone: 814-466-6202
Microfuge 11(11 600 g/13 250 rpm) and Microfuge 12(12 200 g/12 200 rpm) offer variable speed control, an automatic reset timer, and rotor imbal ance protection. Microfuge 12 holds 60 1.5-mL or 1.8-mL tubes; up to 72 5 0 0 - μ ί or 600-μί tubes; and up to 84 250-AtL or 4 0 0 - μ ί tubes. Microfuge 11 holds 18 1.5-mL, 1.8-mL or 500-μί tubes; 30 600-μί tubes; and 48 250-μί or 4 0 0 - μ ί tubes. Both include a "feed back" speed control system that com pensates for fluctuations in line voltage or the number of tubes being run. Beckman 417
Electrochemical Detector for C N - and S 2 ~ The electrochemical detector deter mines C N - and S 2 _ at ppb levels. Other electrochemically active species detectable by the instrument are Br - , Γ , SCN~, S 2 0 3 ~ , mercaptans, phenols, and aromatic amines. The detector can be used with all company ion chromatographs, Autolon systems, and liquid chromatographs. Dionex 419
ACS Symposium Series No. 145 Maynard A. Amerine, Editor Wine Institute A symposium sponsored by the Division of Industrial and Engineering Chemistry of the American Chemical Society. Appealing blend of technical and general-interest information for any one interested in wine production and wine. In this book, the history and current tech nology of American wine production is discussed by leaders in the wine industry. The readerfollows the grape from the vine through the harvesting, crushing, pres sing, fermenting, clarifying, stabilizing, aging, and bottling processes. Advan tages and disadvantages of processing options are discussed for each step. State-of-the-art production methods of white, red, and rose table wines, sparkling wines, sherry, and dessert wines are pre sented in detail for California, Washington State, and the East. Makes fascinating reading for chemists, enologists, viticulturalists and for the growing number of home winemakers. CONTENTS
Four-Solvent/Graphics Display Module for LC The system includes the company's se ries 8800 LC three-piston pump mod ule, programming capabilities for the system's gradient controller, and a graphics display module. Programming capabilities enable production of foursolvent gradients, using prepro grammed linear and exponential shapes in separate gradient segments with du rations up to 99.9 min. Seven gradient methods can be stored in the control ler's memory to optimize gradient pro files in succeeding experiments. Changes required to incorporate foursolvent capability into existing series 8800 HPLC gradient systems can be done in the field. Du Pont 421
CIRCLE 2 ON READER SERVICE CARD 732 A · ANALYTICAL CHEMISTRY, VOL. 53, NO. 6, MAY 1981
Development of the American Wine Industry to 1960 · White Table Wine Production in California's North Coast Region · Red Wine Production in the Coastal Counties of California 1960-1980 · Sparkling Wine Production in California · Production of Table Wines in the Interior Valley · Production of Baked and Submerged-Culture Sherry-Type Wines in California 1960-1980 · Wine Production in Washington State · Grapes and Wine Produc tion in the East 229 pages (1981) LC 80-28041
Clothbound $30.00 ISBN 0-8412-0596-5
No. 137 Chemistry of Winemaking 311 pages (1974) Hard $27.00 Order from: SIS Dept. Box 44 American Chemical Society 1155 Sixteenth St., N.W. Washington, D C 20036 or CALL TOLL FREE 800-424-6747 and use your credit card.
