FOR GAS CHROMATOGRAPHY— NEWS
GOW-MAC
GAS
M a s s Spectrometry
MASTER
The third annual meeting of ASTM Committee E-14 on Mass Spectrometry will be held the week of May 22 at the Mark Hopkins Hotel, San Francisco, Calif. May 23 through May 26, 69 papers will be presented covering isotopic abundance determinations, ion ization potentials, solids analysis, high molecular weight analysis, and new mass spectrometer techniques and de velopments. On May 27 there will be two mass spectrometer clinics spon sored by instrument manufacturers, and from May 23 through May 26 there will be an exhibit of mass spectrometers and associated equipment. During the week E-14 subcommittees will meet.
— ACCURATE, LOW COSTf EASY TO USE • Gow-Mac Gas Analysers have been proven in performance by leading t e c h n i c i a n s i n g a s chromatography. Response is rapid, accurate. Complete Gas M a s t e r u n i t s or s e n s i n g elements to build into your own apparatus. Hermetic or me chanical seals, built-in reference gases on specification. Panel instruments custom designed for high sensitivity such as 99.5100% Argon purity ± 5 0 ppm. or H2 in 0 2 to within 2 ppm.
GOW-MAC PORTABLE GAS MASTER
Details are available from William Priestley, Jr., Esso Research and Engi neering Co., P.O. Box 121, Linden, N. J.
WRITE FOR ILLUSTRATED LITERATURE OR RECOM MENDATIONS ON YOUR SPECIFIC PROBLEMS IN VOLVING CAS ANALYSIS
Monday Morning Section 1. J. HIPPLE, Presiding Large Electromagnetic Isotope Separators at Oak Ridge.
GOW-MAC RECORDER 4 T/E GEOETRY UNIT
GOW-MACINSTRUMENT CO. 100 KINGS ROAD, MADISON, N. J.
For further information, circle number 26 A-1 on Readers' Service Card, page 47 A
C. P. KEIM.
Considerations of Isotope Dilution Anal yses. R. BALDOCK, J. K. GLADDEN, AND L. O. GILPATBICK.
Isotope Analysis Using Mercury Dimethyl. V. H . DlBELER.
Recent Isotopic Measurements Utilizing Two-Stage Magnetic Analyzer. T. L. COL LINS AND F. A. WHITE.
Recent Rb-Sr Geologic Age Determina tions and Other Applications of Mass Spec trometry in Geology. L. F. HERZOG. Precision Isotopic Measurements of Sulfur in Geochemical Problems. W. V. ATJLT
For Your LABORATORY
AND J. L. KULP.
Measurements of Argon-40 from Rocks and Minerals by Isotope DilutionTechniques.
α comp/efe line of
D. R. CARE.
Measurement of Small Differences in Bio/B" Ratios. w. D . H ABM AN AND J .
GLASSWORKING
M. SAARI.
Measurement of Small Differences in N»/Ni5 Ratios. J. M. SAARI AND H. O.
EQUIPMENT
FlNLEY.
Bethlehem Lab-Lathe
Monday Afternoon Section 2. A. O. C. N I E R , Presiding Quasi-Equilibrium Theory of the Mass Spectra of Hydrocarbons. A. L. WAHRHAFTIG AND H .
Write today
* * * * * * *
for Catalog C-54
A Bethlehem Seal-Crib M Wet-Cut Glass Cut-off Machine
Bethlehem Lab-Lathe Bethlehem Seal-Crib Lathe Burners Blast Burners Hand Torches Glassworking Tools Wet-Cut (Glass Cut-off Machine)
EYRING.
Qualitative Study of Statistical Theory of Mass Spectra. L. FRIEDMAN, F. A. LONG, AND M. WOLFSBERG.
Simplified Molecular Models for ProtonRich Ions of High Charge. R. A. OGG, JR. Mass Spectrometer Ion Source Reactions and Efficiencies.
D. P. STEVENSON.
Mass Spectrometry Study of Free Radi cals Formed on Filaments. D. J. FABIAN. Radicals Formed in Reaction of HydrogenOxygen and Methyl-Oxygen Reactions. W. A. BRYCE AND K. U. INGOLD.
Mass Spectra of Halogen Fluorides. A. P. IRSA AND L. FRIEDMAN.
BETHLEHEM Apparatus Company, Inc. HELLERTOWN,
PENNSYLVANIA
For further information, circle number 26 A-2 on Readers' Service Card, page 47 A
26 A
Ionization and Dissociation of NF3 by Electron Impact. R. M. REESE AND V. H. DIBELER.
Electron Attachment in SF3 Using Monoenergetic Electrons. W. M. HICKAM AND R. E. Fox. Tuesday Morning Section 3. M. G. INGHRAM, Presiding New Doublet Measurements. H. EWALD, H. LIEBL, G. SCHIERSTEDT.
SALERMANN,
ANALYTICAL
AND G.
V.
CHEMISTRY
