NEW BOOKS
Can you prepare 1000 ml. 1/10 N Sodium Hydroxide for $2.— in 2 minutes ?
The Thermodynamic Properties of Helium from 6 ° to 5 4 0 ° R. Between 10 and 1500 PSIA. D. B. Mann. National Bureau of Standards Technical Note 16JfA. S9 pages. January 1962. 60 cents.
WATERS
The following can be obtained from the Office of Technical Services. U. S. Dept. of Commerce. Washington 36, D.C.
CHROMATOGRAPHY MONITOR
Publications, Reports, and Papers for 1961 From Oak Ridge National Laboratory. Oak Ridge National Laboratory. Union Carbide Corp.. for the U. S. Atomic Energy Commission. 19'i2. S3 pages. ORNL-3300. S3.
- COLUMN
More than 1500 research reports, scientific papers, books, and magazine articles, all of which originated at O H X L , are listed in this publication. Included in the listings are publications on varied aspects of nuclear technology such as analytical chemistry, instrumentation, neutron physics, and thermonuclear research. M a n y of these research reports are available from the OTS, D e p t . of Commerce.
ACCULUTE for rapid preparation of standardized volumetric solutions. Saves time, dollars and errors in thousands of laboratories. Complete range of concentrates in stock, orders shipped same day as received. Acculute is sealed in convenient polyethylene or glass ampoules and can be kept indefinitely.
Electrometric Methods of Analysis. ./. F. Gettings. 11 pages. 1962. AD 276 373. 60 cents. I n s t r u m e n t s used in electrometric analysis, and the application of each instrument to several different types of analysis are discussed. T h e instruments considered are the Beckman pH meter, Fisher Titrimeter, Sargent oscillometer, and Sargent Polarograph. Automated instruments and techniques for electrometric analysis which were discussed in papers at the P i t t s b u r g h Conference on Analytical Chemistry and Applied Spectroscopy are also reported. This report includes a description of a rapid method for the determination of chlorine and bromine in organic compounds using microanalytical techniques.
Sample price list: Acid Hydrochloric
1 N $2.25
Iodine
N / 1 0 $2.25
Sodium Thiosulphate. . . . N / 1 0 $2.00 At leading laboratory supply houses across U.S.A. a n d C a n a d a .
For complete price list write to
NACHEMIA
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CHAMPIAIN, N.Y. Circle No. 24 on Readers' Service Card 74 A
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ANALYTICAL CHEMISTRY
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T h e liquid c h r o m a t o g r a p h y t e c h n i q u e is a p a r t i c u l a r l y v a l u a b l e a n a lytical tool to the f o o d , d r u g , rubber, medical, pharmaceutical and heavy c h e m i c a l i n d u s t r y b e c a u s e it a l l o w s analysis w i t h o u t subjecting the s a m ple t o h i g h t e m p e r a t u r e s w h i c h m a y d e s t r o y or b r e a k d o w n t h e t r u e s a m ple. In l i q u i d c h r o m a t o g r a p h y t h e s a m p l e is i n t r o d u c e d t o t h e c o l u m n in its t r u e l i q u i d s t a t e or as a s o l i d d i s s o l v e d in a l i q u i d . A n e l u t i n g s o l vent then carries the sample t h r o u g h t h e c o l u m n . T h e d e v e l o p m e n t of t h i s technique has lagged far behind gas c h r o m a t o g r a p h y because of the lack of a u n i v e r s a l , s e n s i t i v e c o l u m n m o n itoring device. The Waters Miniature Liquid Chromatography Monitor (LCM) was d e v e l o p e d in c l o s e c o - o p e r a t i o n w i t h the Proctor & Gamble Company, Cincinnati, Ohio to provide this m u c h needed simple, inexpensive, small volume, versatile monitor. To make installation easy and obtain rapid res p o n s e t h e W a t e r s L C M is d e s i g n e d for integral m o u n t i n g with the column.
LOW COST $525.00 A Rapid Method for the Micro Determination of Carbon and Hydrogen in Organic Compounds. H. M. Rosenberg and others. Directorate of Materials and Processes, U. S. Air Force. 13 pages. Feb. 1962. Order PB 181 399. 60 cents. T h e developed technique uses samples weighing between three and five milligrams, utilizes a modified Pregl combustion train, and adheres to the classical method. T h e time required for an analysis is approximately 30 minutes.
SMALL VOLUME 0.37 cc FAST RESPONSE 2 SEC. FULL SCALE W A T E R S ASSOC. INC. 4 5 FRANKLIN ST. FRAMINGHAM, MASS. AREA
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