WHEN YOU NEED AN:
X-Ray System for Quartz-Crystal Studies DIANO has it !
trochemical analyzer (all of which can be operated with fixed or remote probe head or cryogenic detector for high-resolution testing). Also Model 400 automated X-ray spectrochemical analyzer with automated sample sequencing and pulsed or continu ous X-ray tube selection. All operate on principle of X-ray fluorescence and analy sis from 1 to 81 elements.
Rigaku/USA 607 North Ave., Wakefield, Mass. 01880. 3064 X-ray spectrometer featuring an endwindow rhodium target X-ray tube, multi ple sample holder, NIM modules, micro computer control, software and data reduc tion capability. Unique low-cost diffractometer system which will sell for less than $10,000. Sadtler Research Laboratories, Inc. 3316 Spring Garden St., Philadelphia, Pa. 19104. CIRA 101 chromatographic infrared analyzer; standard and commercial collec tions of reference spectra, including IR (liquid and vapor phase), NMR, 13C NMR, UV, Raman, fluorescence, and DTA; audio visual programs on instrumental tech niques of analysis, basic chemistry and math; technical books on chemistry and spectroscopy; "Reactiones Organicae," a documentation of useful organic reactions on slotted punch cards.
Schoeffel Instrument Corp.
Quartz-crystal orientation, cutting, sorting, and testing are just what DIANO's new system does better than anyone else. This compact diffraction instrument is geared to rapid analysis of piezo-electric crystals. System features can be selected to meet the accuracy and repeatability needed for your industrial or scientific application. The DIANO A 4 9 7 6 B A / B B XRD-700 Quartz System utilizes an Xray detector to indicate peak intensities of X-ray diffraction effects from quartz oscillators. An argon-gas-filled Quartz Ionization Cham ber and its Electrometer are mounted in a cylindrical container on the high-precision piezo goniometer. X-ray intensity is read directly from a microammeter on the table-mounted Amplifier. DIANO's XRD Double-Crystal Goniometer is available for greatest accuracy and repeatability in your orientation tests. A reference crystal (monochromator) is mounted to provide its reflected beam for rediffraction from parallel planes in the work crystal. This unique feature enables exact crystal orientation to within 5-15 seconds of arc, with over 9 5 % repeatability by skilled operators. Quartz testing from four positions is quickly accomplished. The built-in 0-50° vernier scale on the quartz goniometer arm eliminates gear-train error and provides exceptionally easy direct measure ment of test angles. For critical tuning, a 2 " dia. micrometer and vacuum chuck with three-point sapphire tip backing are standard on the Double-Crystal Goniometer. Crystallographic studies now can be faster, simpler, and more accurate with this new performer from DIANO. See your nearby DIANO representative for more details, or write:
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DIANO CORPORATION INDUSTRIAL X-RAY DIVISION 8 COMMONWEALTH AVENUE WOBURN, MASSACHUSETTS 01801 U.S.A. TEL.(617)-935-4310TELEX 94-9306 CIRCLE 59 ON READER SERVICE CARD
928 A · ANALYTICAL CHEMISTRY, VOL. 47, NO. 1 1 , SEPTEMBER 1975
24 Booker St., Westwood, N.J. 07675. New continuously variable wavelength monitor for LC; chromatogram scanners, research and clinical models (TLE, TLC); accesso ries include computing integrator, printout and recorder interfacing; high-intensity lamp housing (arc and filament type); lowcost miniature grating and prism monochromators, new V4-m high-intensity grat ing monochromator, plus other monochro matic illumination systems; and photodetection equipment.
Scientific Research Instrument Corp. 6707 Whitestone Rd., Baltimore, Md. 21207. Biospect—dual ΕΙ/CI quadrupole mass spectrometer, complete GC-MS com puter system for analysis of biochemical and organic compounds. Spectrametrics, Inc. 204 Andouer St., Andover, Mass. 01810. Spectraspan—plasma emission spectrome ter. Echelle grating spectrometer and plas ma excitation source combination.
Spectra-Physics 2905 Stender Way, Santa Clara, Calif. 95150. Liquid chromatography products: Model 3500B research liquid chromatograph, Model 3100 low-cost liquid chromatograph. LC pumps, detectors, columns, and column packings. Chromatography au tomation products: complete family of computing integrators for LC and GC. Minigrator, System 1, System IV, and Sys tem AA. Spectrotherm Corp. 3040 Olcott St., Santa Clara, Calif. 95051. Model ST-10 high-speed, double-beam, fast Fourier transform IR spectrometer system in tandem with GC system equipped with minicomputer, floppy disk for data storage, and real time display of IR spectrum of submicrograms of GC effluent. Model 800 IR thermal imager featuring high resolution and video display.
Supelco, Inc.
Supelco Park, Bellefonte, Pa. 16823. Prod ucts relating to gas, liquid, and thin-layer chromatography. Accessories and products
