NEW PRODUCTS
LC. Auto-Sep system is designed to automate the separation and purifi cation of proteins. The purification procedure, from sample loading and column washing to elution and frac tion collection, can be programmed on a task-by-task basis. Fluid Man agement Systems 206
S 500 absorbance detector, which ac quires spectra at speeds up to 96 points per second, can simultaneously monitor up to 32 wavelengths from 190 to 800 nm. Flow cells are available for a variety of HPLC applications. Isco 201
Instrumentation Spectroradiometer. Double-monochromator spectroradiometer, Model IL1700/760D/791, is a digitally con trolled system with scanning speeds of 10, 20, 50, 100, 200, 500, and 1000 nm/min. Features include PC-com patible software and digital wave length and signal readouts. Interna tional Light 202 F r e o n . LAN-I Freon 123 monitor, which is sensitive to ppm levels of Freon 123, will not respond to the presence of other Freon gases. The monitor is waterproof; insensitive to vibration; and suitable for long-term, unattended operation. General Anal ysis Corp. 203 FT-IR. Analect Diamond-20 FT-IR spectrometer system incorporates Windows-based software t h a t pro vides symbolic icons, interactive pop up menus, and an online help manu al. F e a t u r e s include an e x t e r n a l beam port to accommodate accesso ries. Laser Precision Analytical 204 Evaporator. N-EVAP-24 is a 24-position high-speed circular evaporator t h a t accepts 10-29-mm o.d. t e s t tubes simultaneously. The system re quires only an electrical source and a nitrogen source for evaporation; no vacuum pump is necessary. Organomation Associates 205
Particle size. Fritsch A-20 scanning photo sedimentograph d e t e r m i n e s size distribution for particles ranging from 0.5 to 500 μιη. Changes in the blockage of t r a n s m i t t e d light a r e measured as the particles settle from a sedimentation liquid. Gilson Co. 207 Color. CM-1000 spectrophotometer, designed for the color measurement of a variety of surfaces, includes a keyboard, LCD panel, 256-dot ther mal line printer, 3.5-in. floppy disk drive, high-speed data processing cir cuitry, and a hand-held measuring head. Minolta 208
Software FT-IR. PC/IR version 3.0 provides IR data manipulation, conversion, and processing. Features include spectral library search, spectral smoothing, and a built-in quantitative analysis program with concentration calcula tions of up to 16 components in a sin gle sample. Nicolet 209 Data analysis. Spyglass Transform, designed for Macintosh computers, is an interactive visual data analysis program for manipulating and visu alizing arrays of floating point num bers. The data can be represented as a line graph or as a color, polar, or interpolated image. Spyglass 210
ACS Publications and Services PACTS FACTS. Free booklet de scribes the importance of child/adult science programs in a community and provides information on a minigrant program designed to support such projects. 211
472 A · ANALYTICAL CHEMISTRY. VOL. 63. NO. 8. APRIL 15, 1991
Planning for Graduate Work in Chemistry. Written for undergradu ate students considering advanced study in chemistry, this free bro chure provides information on gradu ate school selection, application, and the admission process. 212 Groundwater. Free pamphlet pre sents fundamental information about groundwater and is designed to help citizens evaluate groundwater prob lems, construct plans of action, and determine the implications of such action. A list of suggested readings is included. 213
Manufacturers' Literature Rheology. Understanding Rheological Testing: Thermoplastics explains viscoelasticity, modulus, stress, strain, and temperature- and time-depen dency of materials. More t h a n 40 graphs and illustrations are includ ed. 24 pp. Rheometrics 214 Filtration. Brochure discusses the basics of coalescing filtration, includ ing filter performance, design, and efficiency. A guide to filter selection, installation, and maintenance is pro vided. 12 pp. Finite Filter Division, Parker Hannifin Corp. 215 LC. Rainin Dynamax Review, Vol. 4, No. 2, features articles on protein fractionation by isoelectric focusing and on purification of oligonucle otides by anion-exchange chromatog raphy. 8 pp. Rainin Instrument Co. 216 Proteins. Guide describes HPLC col umns for protein, peptide, and nucle ic acid purification. Applications, typical sample loads, and flow rates are discussed. Bio-Rad Laboratories 217
Companies interested in a listing in this department should send their releases directly to ANALYTICAL CHEMISTRY, Attn:
New Products, 1155 16th Street, N.W., Washington, DC 20036.
