NEWS Advantages, the authors stated, in clude: the overcoming of solubility difficulties for inorganic salts en countered previously in nonaqueous procedures; a simplified extraction pro cedure compared to liberating the base or acid and then extracting with a nonaqueous solvent, and then a titra tion; lack of interference by carbonate and hydroxide impurities; differentia tions of acidic groups on some mole cules or in acid mixtures; infrequent precipitate formation in titration; and use of glass-calomel electrodes. Continuous Analysis of Fluid Sys-
ANALYST'S Water or Oil Bath Heating — Circulation Temperature Control in ONE compact unit
tems. T w o simple instruments for continuous analysis of fluid systems were described b y C . W . Weber a n d W. S. P a p p a s , Union Carbide Nuclear Co. One is a unique analyzer which per mits continuous a n d automatic opera tion in t h e analysis of fluorine. T h e instruments a r e being applied t o a u t o matic process control in t h e three gas eous diffusion plants a t O a k Ridge where they give better t h a n 9 5 % onstream efficiency a n d a precision of a t least ± 1 % fluorine. T h e analyzer depends on t h e reduc-
CALENDAR
Sept. 29 to Oct. 1
Second Conference on Analytical Chemistry in Nuclear Reactor Technology, Oak Ridge National Laboratory, Gatlinburg, Tenn. Page 39 A, September issue.
Oct. 7 to 8
Sixth Anachem Conference, Whittier Hotel, Detroit. Contact: Thomas O. Morgan, Chemistry Department, General Motors Corp., Box 188, North E n d Station, Detroit 2, Mich. Page 53 A, September issue.
Oct. 20 to 22
American Oil Chemists' Society, fall meeting, Hotel Sherman, Chi cago, 111.
Oct. 21
Society of Plastic Engineers, Inc., regional technical conference. Curtis Hotel, Minneapolis, Minn. Contact : James C. Sluebner, c/o Rohm & Haas Co., 533 Metropolitan Bldg., Minneapolis. Minn.
• CONVERTS any suitable container into a constant temperature bath.
Oct. 26 to 28
Scientific Apparatus Makers Association, Laboratory Apparatus and Optical Sections. Westchester Country Club, Rye Ν . Υ. Contact : SAMA, 20 No. Wacker Drive, Chicago 6, 111.
• WILL CIRCULATE tempered fluid with controlled flow.
Oct. 29 to 30
Fifth Annual Computer Applications Symposium. Armour Re search Foundation of Illinois Institute of Technology, Chicago, 111. Contact: M. J. Jans, ARF, 10 W. 35th St., Chicago 16, 111.
Oct. 31
Symposium on Advances in Tracer Applications of Tritium, New York, Ν . Υ. Sponsored by New England Nuclear Corp., with Atomic Associates, Inc., and Packard Instrument Co., Inc. Con tact: Symposium, New England Nuclear Corp., 575 Albany St., Boston 18, Mass.
Nov. 5 to 7
Society for Applied Spectroscopy and A S T M Committee E-13, joint meeting on absorption spectroscopy. Contact: Paul Lublin, Sylvania Electric Products Inc., Bayside, Long Island. Page 64 A, September issue.
BRONWILL® Constant
Temperature
CIRCULATOR (Pat. Pending)
• NEW long-life, quiet motor — 4500 RPM. •
CONTACT THERMOMETER.
Magnetic setting 0 - 100° C. •
TEMPERATURE sensitivity
± 0.01° C in insulated bath. A COMPLETE PORTABLE UNIT ONLY 20" HIGH FOR HEATING, CIRCULA· TION AND TEMPERATURE CONTROL
BRONWILL SCIENTIFIC
DIVISION
WILL CORPORATION P.O. BOX 127, BRIGHTON STATION ROCHESTER 10, N.Y. Circle No. 46 A on Readers' Service Card, page 101 A
46 A
·
ANALYTICAL CHEMISTRY
March 2 to 6, 1959—Tenth Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy and Exposition of Modern Laboratory Equipment, Pittsburgh, Pa. Page 52 A, September issue. April 5 to 10, 1959—American Chemical Society, 135th National meeting, Boston, Mass. April 6 to 7, 1959—2nd National Symposium on Chemical and Petroleum Instrumenta tion, St. Louis, M o . Instrument Society of America. May 11 to 13, 1959—Symposium on Instrumentation and Computation in Process Development and Plant Design, Westminster, England. Sponsored jointly by the Institution of Chemical Engineers, Society of Instrumental Technology, British Computer Society. May 17 to 19, 1959—5th National Symposium on Industrial Methods of Analysis, Houston, Tex. Industrial Society of America. June 15 to 17, 1959—Second International Symposium on X-Ray Microscopy and X - R a y Microanalysis, Stockholm. June 17 to 19, 1959—2nd Nuclear Instrumentation Symposium, Idaho Falls, Idaho. Instrument Society of America. Sept. 13 to 18, 1959—American Chemical Society, 136th National Meeting, Atlantic City, N . J. Sept. 21 to 25, 1959—14th Annual Instrument-Automation Conference and Exhibit, Chicago, 111. Instrument Society of America. — . Coming
— CVentS
