High Temperature Ceramics Use up to 2 7 0 0 ° C
NEWS an advanced course. Those expecting to take it should have previous statis tical training, including work on tests of hypotheses, linear correlation, and at least an introduction t o analysis of variance. F u r t h e r information can be obtained from Charles R . Hicks, P u r due University, Lafayette, Ind.
Chromatography Symposium at Canisius • Melting Crucibles · Tubing • Boats · Custom Shapes • Flame Spray Rod & Tubing Consider this list of L E C O pure oxide ceramic materials (no binder to lower melting point), their chemi cal composition and top usable tem perature in an oxidizing atmosphere. Alumina Calcium Zirconate Magnesia Mullite Spinel Thoria Zircon Zirconia
AI2O3
1950°C
CaO.ZrOi MgO 3AI203.2Si02 MgO.Al203 Th02 Zr02.SI02 Zr02
2100°C 2400°C 1800°C 1900°C 2700°C 1870 C C 2500°C
For further information
write:
LABORATORY EQUIPMENT CORP. 3013 Hilltop Road, St. Joseph, Michigan
Matheson Corrosion Resistant Pressnre Regulators Series 15 for Hydrogen Chloride, BoronTrifluoride, Chlorine, and other corrosive gases or gas mixtures. Series 15 regulators use the most chemically resistant materials for greatly increased life and performance. A special nickel coating is used on all body surfaces. The seat is of long wearing, inert Kel-F; all gaskets are of Teflon. The flow control outlet valve is Monel. A monel check valve to prevent suck-back is available for direct attachment. See the Matheson Compressed Gas Catalog for information on other Matheson regulators and valves designed for Sulfur Dioxide, Hydrogen Sulfide, Ammonia and the other 82 Matheson Gases. Write for your free copy.
The Matheson Company, Inc. Compressed Gases and Regulators 60 A
·
ANALYTICAL CHEMISTRY
East Rutherford, N. J.; Joliet, 111.; Newark, Calif.
A gas chromatography symposium will be held a t Canisius College, Buffalo, Ν . Υ., on April 18 t o 20. T h e program is t o be composed of two days of train ing lectures a n d one d a y of invited papers. As part of the program, a lab oratory featuring much of the newest gas chromatographic equipment will be conducted. F u r t h e r information is available from D r . H e r m a n A. Szymanski, Canisius College, 2001 Main St., Buffalo 8, Ν . Υ .
Industrial Spectrography Course Announced A special two-week intensive course in modern industrial spectrography will be given b y Boston College a t Chestnut Hill, Boston, Mass., from July 18 to 29. T h e course is designed particularly for chemists and physicists from industry who a r e desirous of learning the tech niques of emission spectroscopy as a n analytical tool. Additional information can be obtained from R e v . James J . Devlin, S.J., D e p a r t m e n t of Physics, Boston College, Chestnut Hill 67, Mass.
Cornell Offers Summer Microscopy Course A three-week course in chemical mi croscopy will be given a t Cornell Uni versity, beginning July 11. T h e course will include measurements and particlesize determination, quantitative analy sis, study of crystals and polymeric m a terials with t h e polarizing microscope, physical chemistry of crystallization, optics a n d photomicrography, a n d an introduction t o qualitative analysis. Enrollment, which should be completed b y J u n e 15, is limited. Correspondence should be addressed t o Prof. C . W . Mason, School of Chemical and M e t a l lurgical Engineering, Cornell Univer sity, Ithaca, Ν . Υ .
Graduate Fellowship Programs Approved Approval of 406 programs of gradu ate study involving 1500 three-year fel lowships authorized b y t h e National
