ANALYTICAL
40A
For Research and Routine POLAROGRAPHY...
CHEMISTRY
THE ANALYST THE JOURNAL OF THE SOCIETY OF PUBLIC ANALYSTS AND OTHER ANALYTICAL CHEMISTS OF GREAT BRITAIN A MONTHLY PUBLICATION DEALING WITH ALL BRANCHES OF ANALYTICAL CHEMISTRY First Published 1876
Electro-Polarizer a
PATWIN
Instrument,
Designed to fill the growing need for a precise, reliable and stable manual polarographic instrument . . . will measure all the fundamental charac teristics of a d r o p p i n g m e r c u r y electrode system (such as half-wave potentials and diffusion currents) in absolute terms and with high preci sion. Such a calibrated instrument is of utmost importance in routine work when complete waves are not obtained. It may also be used as an accurate potentiometer wherever an electrometer is not necessary. O N L Y instrument with all these features : •
25 turn helical potentiometer ac curate to 0 . 1 % , reading to one millivolt with a span voltage of 2.5 v. — and to double this value at a span voltage of 5.0 v.
•
Self-contained standard cell and standard resistors for calibrating.
•
Low resistance galvanometer with sensitivity approximating 0.005 microamperes per millimeter. Multiple shunt from 1 χ to 300 x. Scale length: 320 mm.
USES Metals Alloys
Recent issues have contained the following important papers — "The Assay of Analgesic Drugs on Man," by C. A. Keele. (Biological Methods Group paper.)
Ores Plating solutions Boiler water Corrosion studies Paints
"The Determination of Sub-Microgram Quantities of Arsenic by Radioactivation — Part II: In Sea-Water; Part III: In Biological Material," by A. A. Smales and B. D. Pate. (Part I was published in Analytical Chemistry, 1952, 2 4 , 717.1
Explosives Petroleums Gasoline Oils and soaps
"The Measurement of Diffusion Current with a Pen-Recording Polarograph," by W . Furness. (Physical Methods Group paper.)
Sugar products Dyestuffs Albumins Amino acids Alcohols Ketones Serums Proteins Alkaloids Blood Urine Hormones
"The Determination of Traces of Arsenic in Ger manium Dioxide and Tetrachloride," by S. T. Payne (with discussion). "A Routine Method for the Analysis of Table Jellies," by Ε. Μ. Chatt (with discussion). "Paper Chromatography of Some Starch Conver sion Products," by J. L. Buchan and R. I. Savage. "The Determination of Water in Nylon," by J. Haslam and M. Clasper.
Colloids Kinetics Reaction rates Equilibria Catalysis Diffusion
For more information write for Bulletin 6 5 1 . Distributed by
General Scientific Equipment Co. Hamden 14
THE ANALYST publishes original communications from members and non-members of the Society and the papers on specialised subjects sponsored by the Biological, Physical and Microchemical Groups of the Society. It contains also the Proceedings of the Society and the Discussions that follow the presenta tion of papers at its scientific meetings, the Reports of The Analytical Methods Committee, Notes on Analyti cal Methods and Apparatus and Book Reviews.
Connecticut
In forthcoming issues THE ANALYST will publish the papers, with discussions, presented at the International Congress on Analytical Chemistry at Oxford, England, in September, 1952. THE ANALYST is published for the Society by W . Heffer & Sons Limited, 3 and 4 Petty Cury, Cambridge, England. Subscription price $1 1.20 per annum. Single copies 9 3 cents. British Chemical Abstracts C, Analysis and Apparatus, is supplied free, monthly, to all sub scribers.
