. the ANALYST'S * column •
INTRODUCING THE WELCH
disH
um
Ρ SERIES
FOR VACUUM DISTILLATION AT LOW COST
L.T.Hallett, Editor
V a c u u m Distillation is easier because Dist-O-Pump ates
with
the
oper
patented
VENTED e x h a u s t -
171 FPORTS being made, both by GovL^ ernment and private groups, to translate Soviet scientific and technical journals into English, are beginning to bear fruit. Approximately 60,000 pages a year of key material are now .•wailable, the National Science Foun dation reports. In a recently-issued study, NSF lists all the journals now being translated, by whom, and the subscription costs (NSF report 58-141, National Science Foundation, Washington 25, D. C ) . At present there are 53 English trans lations of Russian journals, 4 extensive series of translated Russian abstracts of scientific papers, and 4 series of partial translations of important Rus sian journals. Translation work is done by six pri vate translating and publishing firms, without Government funds, and by several Government groups. The lat ter include the National Science Foun dation, National Institutes of Health, Office of Naval Research, and Atomic Energy Commission. The last two work through the NSF. NSF initiated its Russian-to-English translations in mid-1952, the same year that it started its foreign serviceinformation program. With support of NSF, 31 Soviet journals are now being translated. These cover most major fields of science. NSF translations are being made by professional societies and university groups; and are self-administrated to a considerable extent. These groups sell translations on a subscription basis. The resulting income defrays part of the costs and thus reduces need for Government support. Journals presently being translated under Go\ r ernment and private auspices which may be of general interest to analytical chemists include: Commercial Agencies Journal of Analytical Chemistry Proceedings of the Academy of Sci ences of the USSR Chemical Technology Section Agrochemistry Section Geochemistry Section Biochemistry Section
Condensable vapors are r e moved before they become troublesome
a n d create
a
real problem—
Quiet Operation makes DistO-Pump a pleasure to use. N o . 1399
The Dist-O-Pump is designed to fulfill the demand for a low cost single stage vacuum distillation pump of moderate capacity. It provides dependable pump ing action and effectively eliminates the troublesome condensed-vapor contami nation of the pump oil. Primarily, it consists of a precision Welch single stage pump combined with the field proven Vented Exhaust Feature. Simple operation permits the Vented Exhaust valve to remain open until con densable vapors have been removed. The valve may then be closed to obtain the ultimate vacuum. WRITE FOR COMPLETE LITERATURE ON THIS NEW DIST-O-PUMP
W. M. WELCH SCIENTIFIC COMPANY DIVISION OF W. M. WELCH MANUFACTURING COMPANY
-ESTABLISHED 1 8 8 Ο Ι 515 SEDGWICK STREET, DEPT. A - 1 , C H I C A G O 10, ILLINOIS, U.S.A. Manufacturers of Scientific Instruments and Laboratory Apparatus
Reagent, A.C.S. Now in new, convenient Spherical form
Maximum Impurities and Specifications Chloride ( C I ) Nitrogen ( N ) Phosphate ( P 0 4 ) Sulfate ( S 0 4 ) Heavy Metals (as P b ) Iron (Fe) Form
0.0015% 0.003% 0.0005% 0.002% 0.0005% 0.001%
Spheres, about 1/16" 1/4" in diameter.
MC&B is now manufacturing Sodium, Reagent, A.C.S. in a new spherical form offering these advantages for laboratory use: More reactive; Safer, easier to use; No surface oxidation. This new form of sodium is available from your MC&B distributor, or write direct.
Matheson Coleman & Bell Division of The Matheson Company, Inc. Norwood (Cincinnati), Ohio; East Rutherford, New Jersey V O L 3 0 , N O . 9 , SEPTEMBER 1 9 5 8
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