Product Capsules
50 TONS OF PRESSURE
Adsorbents. A hard, porous, white granular synthetic adsorbent, produced in a variety of mesh classifications, "Florisil" is being used in the most difficult separations of organic com pounds, company states. Floridin Co., P.O. Box 989, Tallahassee, Fia. 85A Buffer Solutions. Information avail able on handy pH buffer kit that con sists of three 500 ml polyethylene dis pensers and 9 packages of powdered buffer salts, sealed in moisture proof envelopes. Analytical Measurements, Inc., 585 Main St., Chatham, N. J. 87A-2 Chemicals, Reagent. New catalog available. A reference guide, it lists more than 1,300 "Baker Analyzed" re agents and other high-purity laboratory chemicals. Has new listings important in new procedures. J. T. Baker Chem ical Co., Phillipsburg, N. J. 35A
AS GENTLE AS A LAMB
o w e r f u l enough to crush α piece of granite—sensitive enough to crack an eggshell without b r e a k i n g the e g g — t h a t ' s the 50-Ton c a p a c i t y W a b a s h Hydraulic L a b o r a t o r y press's r u g g e d 4-column design f o r uniform pressure. Thermostatically-con t r o l l e d , h e a t e d platens have precision ground surfaces. 7" stroke. Daylight opening adjustable t o 1 5 ' Λ " (longer col umns to o r d e r ) . Two 5 0 - t o n models—the 5 0 - 1 5 has 1 2 " χ 1 5 " platens, the 5 0 - 2 4 has 1 8 " χ 2 4 " platens. Both a v a i l a b l e for manual o p e r a t i o n or motorized. I d e a l for l a b w o r k , pilot runs, light production, Perkin-Elmer method, etc. Send f o r c a t a l o g showing the modern W a b a s h line, giving applications a n d listing users.
P
Makers o f Wabash Platens—Electric o r Steam Heated—Water Cooled.
Presses from 3 to 50-tons.
Wabash Metal Products Co. 1556 MORRIS ST.,
WABASH, INDIANA
For further information, circle number 72 A-1 on Readers' Service Card, page 75 A
SARGENT Bibliography of Polarographic Literature 1922-1955 compiled a n d published by
E. H. SARGENT & CO. 192 page book containing: • OVER 6,800 LISTINGS OF W O R K DONE IN THE FIELD OF P O L A R O G R A P H Y • A
4 8 PAGE SUBJECT INDEX
OVER
14,000
REFERENCES
CONTAINING TO
APPLICA
TIONS A N D INVESTIGATIONS S-29368
BIBLIOGRAPHY O F P O L A R O G R A P H I C L I T E R A T U R E — 1 9 2 2 - 1 9 5 5 , SARGENT
Containing over 6,800 references to work done in the field of polaroggraphy. This bibliography represents the latest thorough review of work done in this field to date. All polarographic references are arranged in alphabetical order by
SARGENT SCItNTlfIC
author, complete with title of paper, journal reference and abstract refer ence. In cases where the title does not denote the content of the paper, edi torial notes are included to provide this information. An extensive subject index of applications and investiga tions supplements the bibliography $5.00
LABORATORY INSTRUMCNTS » APPARATUS » SUPPLIES « CHEMICALS
Ε. Η. SARGENT & C O M P A N Y , 4 6 4 7 W . FOSTER AVE., CHICAGO 3 0 , ILLINOIS MICHIGAN DIVISION, 8560 WEST CHICAGO AVENUE, DETROIT 4, MICHIGAN SOUTHWESTERN D I V I S I O N 5915 PEELER STREET, DALLAS 3 5 , TEXAS SOUTHEASTERN DIVISION, 3125 SEVENTH AVE., N., BIRMINGHAM 4, ALA. For further information, circle number 72 A-2 on Readers' Service Card, page 75 A 72 A
•
ANALYTICAL CHEMISTRY
Filter Papers. Circle 21A-1 for analy sis kit sampler with large assortment of 11 cm circles in wide selection of grades. Several quantitative papers included in sampler are also available in sheets or strips for chromatography and electro phoresis. Carl Schleicher & Schuell Co., Keene, N. H. 21 A-1 Filter Papers. Circle 59A for samples of synthetic fiber papers made of dynel, teflon, glass, polyvinylchloride, zein, nylon, and cellulose acetate. H. Reeve Angel & Co., Inc., 52 Duane St., Ν. Υ. 7, Ν. Υ. 59Α Isobutyronitrile. A reactive inter mediate, isobutyronitrile is now avail able in commercial quantities. Boiling range: 100°-105° C. Specific grav ity: 20° C/20° C-0.7690-0.7720. APHA color: 20 max. Water: 0.8% max. Aldehydes (as carbonyl): 1.0% max. Circle 33A for sample. East man Chemical Products, Inc., Kingsport, Tenn. 33A Laboratory Chemicals. Circle indi cated numbers for complete information on the following Baker & Adamson laboratory chemicals: inorganic re agents, 8A-1; "C.P." acids, 8A-2; radiochemicals, 8A-3; rare earths, 8A-4; organic chemicals, 8A-5; and biological stains & indicators, 8A-6. General Chemical Div., Allied Chemical & Dye Corp., 40 Rector St., N. Y. 6, Ν. Υ. 8A-1 to 6 Lithium Compounds. Lithium metal, lithium hydride, lithium hydroxide and lithium carbonate are the basis for both experimental and commercial studies as polymerization catalysts in the manu facture of certain plastics, polymers and resins. Circle 24A for general informa tion. Lithium Corp. of America, Inc., 2525 Rand Tower, Minneapolis 2, Minn. 24 A
