S U Ρ Ρ LY CENTER
LABORATORY CABLE ADDRESS:
PROMPT
SACTEX
SHIPMENT
GAS ANALYSES
TETRAMETHYLAMMONIUM COMPOUNDS Bicarbonate - Bisulfate - Bromide - Chloride - Hydroxide Iodide - Nitrate - Sulfate From technical and industrial grades to highly purified polarographic grades.
S
Mass Spectrometry · Gas Chromatography rTTT · Leak Detection OLLOB
-Vacuum and
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47 Industrial ^ p aRoad, i BirkBlw W C Htifhtl, £ INC. N. ]. 07922 , 201-464-2331 _ _ _ — /
SOUTHWESTERN ANALYTICAL
A
CHEMICALS BOX ΑΜΑ
485 — AUSTIN, TfX 5 1 2 EV 5-3953
—literature on request
C
CEC 21-103C MASS SPECTROMETER SERVICE Accepted Industry standard. Resolution to mass 0 0 0 . Suitable for most organic gases, liquids, solids (min. vapor press. 1 mm. Hg. at 3 0 0 ° C.). Complete petroleum laboratory · Continuous and batch distillations * Pilot plant facilities include high temp.-high pressure continuous f e e d reactor. S/nce J 9S5—EXPERIENCE
COUNTS!
Rates for
1919—1967 La M o t t e , Chemical Chestertown, Maryland U.S.A.
Laboratory
Specialist in Colorimetric Techniques Reagents—Standards—Comparators Send for Illustrated Controls Catalog Dcpt. A C
Supply The UNIVERSITY OF MINNESOTA offers in July and September, 1967
Center
Petroleum Analytical Research Corporation P . O . Box 12334 Houston, Texas 77017 Tel. M l 9-2753
now even better for Fluoride
AMADAC-F TM Convenience-packaged mixture of lanthanum chelate of 3-aminomethylalizarin-NN-diacetic acid, buffers and stabilizers, affords accurate, sensitive and convenient quantitative colonmetric method for fluoride. 50 g. (for 100 detns.), with bibliography and complete instructions $15
BURDICK & JACKSON LABORATORIES, INC. 616 " MUSKEGON, MICHIGAN
49442
Look to Lunex! for your
HIGH PURITY RARE EARTH METALS Write
for catalog
Lunex Company 355-0201 Pleasant V a l l e y , I o w a
TWO COURSES IN INFRARED SPECTROSCOPY * J u l y 18-22, T e c h n i q u e s of I n f r a r e d Spectroscopy * J u l y 24-28 C h e m i c a l I n t e r p r e t a t i o n of I n f r a r e d S p e c t r a Conducted by the Molecular Spectroscopy Laboratory, Department of Chemistry, Professors Stuart Fenton, Bryce Crawford and John ÛTerend; the lectures begin with the fundamentals and carry through to include the more recent developments. Guest lecturers will be W. J. Potts, Clara D. Smith and Koji Nakanishi. Registrants should have at least basic training in chemistry and especially knowledge of the organic nomenclature.
Maximum space—4 inches per advertisement.
Agency com
mission and cash discount al lowed. Column width, 2-3/16"; two-column
width,
4-9/16".
A COURSE IN X-RAY DIFFRACTION AND SPECTROSCOPY * S e p t e m b e r 5-16
Flush mount cuts.
Conducted by the Cristallographie Laboratory, Department of Geology and Geophysics. Professors Tibor Zoltai, John M. Sivertsen, Morris E. Nicholson, Jr., and Paul Weiblen; this Course is designed for beginners in x-ray diffraction and spectroscopy. It will give an introduction to basic crystallography and will cover the practical aspects of z-ray diffraction, x-ray fluorescence, and electron microprobe analysis, which offer immediate application in many phases of science and industry. The Course will also include introduction to x-ray fluorescence, electron microprobe analysis and single crystal x-ray diffraction. FOR further information and registration form, write to the departments above or: Department of Conferences and Institutes, Nolte Center for Continuing Education, University of Minnesota, Minneapolis, Minnesota 55455.
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