McKaveney, research chemist, named supervisor of analytical chemistry.
PEOPLE
Dr. Frank L. Cohen elected to the newly created post of vice president for operations at Merck Chemical Division. Has been director of production. Eric R. Braun named to newly established post of director of development. Cohen is succeeded by Dr. Herbert E. Silcox.
Promotions at Allied Wilbur H. Brumfield has been appointed president of Allied Chemical's Solvay Process Division, and Frank J. French, president of the General
W. H. Brumfield
F. J. French Chemical Division. Frank M. Norton, v.p., named executive vice president AIC Honorary Membership to Florence Wall of Plastics and Coal Chemicals DiviFlorence E. Wall, New York consultant, receives honorary membership in Amersion. Mr. Brumican Institute of Chemists from Dr. Wayne E. Kuhn, AIC president. Her citafield has been extion: "In recognition of active devotion throughout the life of the Institute. The ecutive v.p. and ways in which she fostered it in its early years and continued to serve it later succeeds I. H. are innumerable. The Institute takes pride in the first Honorary Membership to R. H. Reed Munro, now v.p. be conferred on a woman chemist." Miss Wall's specialty is cosmetology. for marketing of Allied Chemical. Mr. French, who has been executive v.p. for Foundation, Tucson. Alfred G. de General Chemical Division, succeeds Meurisse named national field sales Irb H. Fooshee, now v.p.-manufacturmanager of chemical division and ing for the parent company. Robert H. Reed, assistant director Richard B. Kron becomes district sales of development, succeeds Arnold manager at Kankakee, I11. Jack H. Anderson from Solar AirHanchett, retiring, as director of deDr. Gordon D. Brindell from Concraft is now with Lockheed Aircraft, velopment for Solvay Process Division. tinental Oil has joined the staff of the Sunnyvale, Calif., as senior material and Virgil A. Romito named director of U.S. Rubber research center at Wayne, process control engineer. production at Allied Chemical's General James R. Anslow joins staff of Jef- N.J., as a research scientist. Chemical Division. Dr. David N. Burdge is now research ferson Chemicars research labs at AusNorman E. Hathaway joins Allied tin, Tex., as senior research chemical chemist at Denver research center of Chemical as assistant to the president Ohio Oil, Littleton, Colo. From Purdue. engineer. of the Nitrogen Division. Has been a Dr. Robert W. Cairns, director of Dr. August S. Bjornson joins newly director and v.p.-marketing of Oronite organized development section, re- research for Hercules Powder, elected Chemical. search division, electrochemicals de- a member of the board of directors of New appointments in sales departpartment at Du Pont, Wilmington. the company. ment of Allied's Solvay Process DiviDr. Thomas E. Londergan becomes Dr. Gerald W. Camiener joins mi- sion: Fred P. Boehm and Charles E. senior research supervisor in the de- crobiological research division of Up- Varn, assistant directors of sales; Robert partment's lab. john Co., Kalamazoo, as research asso- E. Clagett, Pittsburgh branch manager; G. Richard Barclay, manager of New Lester F. Borchardt, director of ciate. From MIT. physical research at General Mills' cenDr. Melvin C. Chang, research chemchem- Orleans t branch; Jerome L. Hochenedel, tral research labs, named managing ical engineer, named supervisor of manager of Houston branch, succeeding director of the labs, replacing Dr. R. H. chemical engineering and mineral proc- S. O. Taylor, retiring after 33 years of Manley, retiring. Dr. Manley becomes essing at Crucible Steel's central re- service; Richard A. Marshall, manager executive director of Arizona Research search lab, Pittsburgh. Dr. James P. of organic chemicals section.
INDUSTRY
94
C&EN
J A N . 2 5,
I960
Bruce E. Deal joins Rheem Semi- | conductor Corp., Mountainview, Calif., as research chemist. From Kaiser Aluminum & Chemical. J. Edward Dean named director of advertising at Du Pont Co. Has been director of sales for the company's film department.
PURGE METERS
Jurgen Diekmann joins research staff of Du Pont's central research department, Wilmington. Joseph DiSomma named chemist in oral products section of Colgate-Palmolive's toilet articles division, research and development department. L. Paul Dougherty and Jack Doyle join organic chemical sales staff of Emery Industries. Mr. Dougherty succeeds Walter R. Paris, who has resigned to study law. Dr. Robert N. DuPuis has been e l e c t e d v.p.-research at General Foods, New York. He assumes leadership of the company's corporate research activities, including supervision of the research center at Tarrytown, N.Y. He remains on the board of directors of Philip Morris, Inc., where he has been v.p. in charge of research and development since 1952. Dr. Lester C. Faulkenberry named assistant general manager of Kodak Park works of Eastman Kodak. John G. Mulder named administrative assistant to the general manager, succeeding him. Dr. Richard F. Miller becomes director of film services division. J. Paul Gocker named assistant director of the division. E. McKendree Hayden, special assistant to the president of Stanley Chemical, retires after 40 years of service with the company. He will remain a director. New members of technical staff at Esso Research Labs, Baton Rouge: H. W. Helmke, R. L. Howard, F. A. Iddings, G. B. Jolley, A. D . Reichle, R. G. Rosselot, E. E. Sale, W. L. Senn, J. H. Taylor, J. A. Wingate, and J. B. Zachry. Curtis L. Hereld from Chemo Puro Mfg. becomes vice president of Fallek Products Co., New York.
New Series C M acrylic plastic PURGE METERS have been developed for all purging applications requiring a positive flow indication and maximum reproducibility of small flow conditions. Drilled, reamed and polished, these precision engineered units provide the ideal method of inexpensively measuring small gas or liquid flows where high accuracy is not paramount. Etched scales permit direct, easy readings and advanced flow control valve offers improved convenient control. Solid, one piece construction insures trouble-free operation. From $5.00.
C3 5 EMAR corporation uclid A v e n u e , M a n a s q u a n , N. J . E X P O R T D I V I S I O N : E m p i r e S t a t e Bldg., N . Y . 1, N . Y .
Benzyl Alcohol (all grades)
For: Pharmaceuticals Textiles Color Photography Adhesives Perfumes Our TECHNICAL DATA FILE is available upon request.
Benzol PRODUCTS COMPANY M a n u f a c t u r e r s o f Fine C h e m i c a l s
2 3 7 SOUTH STREET NEWARK 5, NEW JERSEY
See page 138 — 1960 Chemical Materials Catalog See page 66 — 1960 Buyers Guide Issue
JAN.
2 5,
I960
C&EN
95
How to
PEOPLE
COOL
Bernard Hornung named to newly created post of chief engineer for Europe for Dewey & Almy overseas division, to head engineering center in Geneva.
Dr. Walter J. Lehmann becomes research supervisor of spectroscopy group at Hughes Tool Co., chemistry department, Culver City, Calif. From Olin Mathieson.
Newly appointed research associates at Du Pont's poly chemicals department: Dr. Richard H. Jones, Dr. N. Gerard McCrum, Dr. Warner L. Peticolas, and Dr. Ronald L. Saxton.
Herbert Lorenz named manager of chemical division at Mercantile Metal & Ore Corp. From American Cyanamid.
Dr. Guglielmo Kabas joins Dewey & Almy in Zurich, Switzerland, as a research chemist.
CURING of
furniture lacquers Furniture manufacturers who use V-C Acid Phosphates as catalysts for lacquer can cut curing temperatures to 140°F, or even lower! Resultant finishes are hard and t o u g h . . . have excellent coldcheck resistance... shrug off cigarette burns, alcohol spills and other solvents. In addition, V-C Acid Phosphates permit formulation at high solids, which makes it possible to finish with a minimum number of coats. V-C Acid Phosphates are strong organic acids which form useful salts with alkali and amines. Purity and lightness of color are outstanding. Solubilities change with chain length. Available as liquids and waxy solids. Types include Methyl, Ethyl, Butyl, Isooctyl, Phenyl, Octylphenyl, Stearyl, and Bis (2-ethylhexyl) Hydrogen Phosphate. FOR SAMPLES and more information on V-C Acid Phosphates as catalysts for wood finishes, write: Virginia-Carolina Chemical Corporation, 401 East Main Street, Richmond 8, Virginia.
ACID PHOSPHATES 96
C&EN
J A N . 2 5,
I960
John V. Kaine promoted to central district sales manager of Colton Chemical, Cleveland. Thomas J. Kmet, who has been biochemist in laboratory branch of U.S. Army at Fort Sam Houston, now an organic research chemist at Lubrizol Corp., Cleveland. Gerald W. Krakower from Weizmann Institute of Science, Rehovoth, Israel, is now senior research chemist at Squibb Institute for Medical Research, New Brunswick, N.J. Dr. David P. Langlois, technical information scientist, named director of
Dr. Ralph N. Lulek joins staff of Lauren B. Hitchcock Associates, New York, as technical adviser for European contacts. From Hey den Pharmacology Co. William C. Lytle retires as v.p. of Atlas Powder after 42 years of service with the company. He has, at one time or another, directed each of the company's major divisions. Chester Magaro named technical specialist for Kaiser Aluminum & Chemical Sales, Chicago. Kenneth W. Marty, senior chemist, promoted to technical service staff, chlorinated products division of Diamond Alkali, Painesville, Ohio. John R. McClain named manager of labor relations for Monsanto's organic chemicals division, St. Louis. Milton E. McLain, Jr., leaves Phillips Petroleum to become radiochemist at Lockheed Aircraft, Buford, Ga. Dr. F. S. Mortimer and Dr. C. D. Wagner, research chemists at Shell Development, named supervisors of research at Emeryville center.
D. P. Langlois
M. J. Thomas
administrative services for market development at A. E. Staley Mfg., Decatur, Ill. Dr. M. J. Thomas named director of chemical market development. V. W. Langworthy named field editor of Water and Sewage Works, a journal devoted to water and waste treatment, Lansing, Mich. From BIF Industries. E. Russell Leach named sales manager and Max R. Sias, manager of sales administration at Michigan Chemical. Donald E. Hipchen joins operations division. New employees at Dow Chemical: Donna N. Leavens and Janet Paige.
Eugene J. Nesselson joins reactor engineering group, irradiation processing department, General Electric, Richland, Wash. Maseh Osgan resigns from Hercules Powder to join Mellon Institute as a fellow. Mario L. Ottolenghi, formerly v.p. of Chemore Corp., leaves to become v.p. and director of Novamont Corp. He is in charge of planning and construction of a new plant to be erected at Neal, W.Va. Robert K. Prince, consulting engineer in pulp, paper, and general process section, electrical application department, retires from Allis-Chalmers Mfg. after 17 years with the firm.
New Post for Stull Philip B. Stull has been elected president and chairman of the board of American Enka Corp., Enka, N.C. He succeeds W. G. Brady, Jr., retired. Stull has just retired from P. B. Stull Hercules Powder upon completion of 36 years as an executive of the company. He has been vice president and a member of the board, the latter for 27 years. He has been a director and member of the executive committee at American Enka since 1956.
Successful adhesive formulations start
with C O L T O N EMULSIONS... BEADS... RESINS
Frank J. Raba named sales representative for rubber chemicals department, American Cyanamid, Bound
Brook, N.J. W. J. Rumick transfers from Dallas to sales office of Fisher Scientific in Houston. Dr. Peter B. Russell named director of research at Wyeth Laboratories, Philadelphia. Has been manager of organic development lab section. Werner Samter named v.p. of production and research at Chemo Puro Mfg. Corp., Newark, N.J. Steve Howarth becomes plant manager of Wilson Organic Chemicals, Sayreville, N.J. Both companies are subsidiaries of Century Chemical. J. A. Schmidlein transfers from Welland plant of Cyanamid of Canada, Ltd., at Niagara Falls, O n t , to agricultural products department of the company in Montreal as manager. Harold B. Seligman named v.p. and general manager at organic chemicals division of Witco Chemical, New York. Jerome Harrison becomes v.p. and director of marketing, and Stanley D. Shaw, midwestern sales manager. James C. Selover leaves Pilot Chemical, where he was technical director, to join Stanford Research Institute as industrial economist in chemical industry economics group. Paul E. Smith joins Chlor-Alkali Division of Food Machinery & Chemical as senior engineer in process design. From Vitro Engineering.
The right adhesive helps any product on the road to market success... and for adhesive manufacturers success can start with Colton emulsions, beads, and resins. Colton offers a wide range of products, each available in a variety of grades, each tailored to meet specific formulation requirements. Colton supplies resins for adhesive compounding . . . not finished adhesives. Vinac (polyvinyl acetate homopolymer emulsions, beads and spray dried powder), Flexbond (copolymer emulsions and beads), and Vinol (polyvinyl alcohol) give formulators a choice of starting points for adhesives to suit specific end-uses. By starting with Vinac, Flexbond, or Vinol products you eliminate guesswork and needless production worry because Colton polymers meet high specifications. Colton starts with high quality monomers . . . production is controlled and strengthened every step of the way by Colton's years of knowledge and continuous research . . . and backing up the skills of Colton Chemical Company, a division of Air Reduction Co., Incorporated, are the basic research resources of Airco's Central Research Laboratories at Murray Hill, New Jersey.
COLTON CHEMICAL COMPANY A Division of Air Reduction Company, Incorporated • 1747 Chester Avenue, Cleveland 14, Ohio Sales Offices and Warehouse Facilities Throughout U. S. Export: Airco Company International, New York 17, N. Y.
AT THE FRONTIERS OF PROGRESS YOU'LL FIND...AN
JAN.
AIR REDUCTION
2 5,
I960
PRODUCT
C&EN
97
PEOPLE
FOR
Dr. Robert K. Sponagel appointed general manager of Toms River division of Toms River-Cincinnati Chemical. Has been a v.p.
PLUTONIUM FACILITY
Walter Stamm joins research staff of Stauffer Chemical, eastern research division, Chauncey, N.Y.
CHEMIST An exceptional opportunity with good growth potential. If qualified, you will assume responsibility for the development and establishment of analytical procedures in the new Battelle Plutonium Facility. Previous analytical experience in the handling of plutonium desired. Competitive salary, unusually comprehensive benefits and fine, metropolitan community. Write L. G. Hill,
BATTELLE Memorial Institute 505 King Ave., Columbus 1, Ohio
LEYBOLD Gas Ballast VACUUM PUMPS
Robert Steiner named midwest sales engineer for Nuclear Corp. of America, research chemicals and isotopes specialties divisions, Chicago. J. R. Stitt named sales manager of newly reorganized petroleum and rubber chemicals division at Oronite Chemical, San Francisco. H. B. Pollock will head surface coatings and plastics chemicals division. B. P. Webb becomes sales manager of industrial chemicals division. R. E. Echols will head product development and market research; T. R. Johnson, advertising and marketing services; and W. M. Burge, sales promotion. Philip F. Swart of Morgan Guaranty Trust Co. of New York, elected president of the New York Board of Trade. Stanley I. Clark of Sterling Drug, former chairman of DC AT, was reelected a vice president, and named chairman of the executive committee. James R. Turnbull, international consultant in marketing, management, and product development for plastics industry, joins DeBell & Richardson, Inc., consulting engineers, Hazardville, Conn. Francis B. Vaughan and John C. Metzger, Jr., named to development department at Du Pont. John H. Norton named industrial marketing analyst in marketing research division. Dr. George W. Walpert named senior research engineer for Kordite Corp., Macedon, N.Y.
World Famous Quality, Design and Dependability The Leybold Gas ballast design actually prevents condensation of vapor in the pump. It prevents oil contamination from lowering ultimate pressures, cuts oil changes and pump maintenance. Leybold Pumps can be operated with or without gas ballast, so that you get the advantages of both gas ballast and oil sealed rotary vane pumps.
WRITE FOR HEW BULLETIN TODAY!
ARTHUR S. LaPINE and COMPANY 6001 South Knox Avenue, Chicago 29, Illinois LABORATORY SUPPLIES AND REAGENTS
98
C&EN
J A N . 25,
I960
Dr. Earl A. Weilmuenster joins technical staff of United Research Corp., Menlo Park, Calif., as assistant manager of propellant development branch. Dr. Elmar K. Wilip joins Nalco Chemical research center, Chicago, as senior research chemist. From Dewey & Almy Chemical. David W. Young, research associate at Sinclair Research Labs, Harvey, 111., has been made a "Kentucky Colonel" by Kentucky Governor A. B. Chandler.
EDUCATION Rossini to Notre Dame Dr. Frederick D. Rossini, Silliman Professor of Chemistry and head of the department at Carnegie Tech, also director of Chemical and Petroleum Research LaboraF. D. Rossini tory there, has been named dean of the college of science at Notre Dame. He will succeed Dr. Lawrence H. Baldinger next September. Dr. Baldinger will continue as associate dean, professor of chemistry, and counselor to the university's premedical students. Before joining the Carnegie Tech faculty in 1950, Dr. Rossini served with National Bureau of Standards for 22 years, and was chief of its section on thermochemistry and hydrocarbons. Dr. V. V. Alderman named associate professor of chemistry at North Central College, Naperville, Ill. Dr. J. A. Christiansen, professor at University of Copenhagen and head of the university's physical-chemical institute, retires and will live in Hellerup, Denmark. Earl H. Hoerger leaves Morningside College chemistry faculty to join Rocky Mountain College staff as professor and head of the chemistry department, Billings, Mont. Dr. Robert T. Lalonde named to research staff of State University College of Forestry, Syracuse University, as research associate in forest chemistry. Eliane le Breton of the Gustave Roussy Institute in Paris, where she directs research in biochemistry, and Dr. E. Barbu, of the Pasteur Institute in Paris, have been given the Charles Leopold Mayer Prize of the Societe de Chimie Biologique. The prize is given annually to encourage research in synthesis, structure, or metabolism of nucleoproteins, especially their multiplication in the absence of living cells. William R. Martin, Jr., joins North Carolina State College, school of textiles, as head of applied chemical research. From Union Carbide Chemicals.
PEOPLE Dr. Thomas Park, professor of zoology at University of Chicago, has been named president-elect of the American Association for the Advancement of Science. He will take office in January 1961 and will succeed Dr. Chauncey D. Leake, the 1960 president. Don K. Price has been appointed to serve out the unexpired term of Dr. Park on the AAAS board of directors. Dr. Harrison Brown of Caltech and Dr. Alfred Romer of St. Lawrence University were also elected to the board. Dr. John H. Woodson becomes assistant professor of chemistry at Wesleyan University, Middletown, Conn.
GOVERNMENT Vernon Akamian joins U.S. Naval Radiological Defense Laboratory, nuclear and physical chemistry branch, as radiological chemist. Dr. John Y. Yang joins in a similar capacity, and Warren J. Heiman rejoins the staff after graduate study. Dr. Johannes H. Bruun named to product and process evaluation staff, a new unit of the U.S. Department of Agriculture's Agricultural Research Service, Washington, D.C. From Hooker Chemical. Reinosuke Hara, on leave of absence from Japan Atomic Energy Research Institute, where he is a senior staff member of the chemistry division, has joined the International Atomic Energy Agency, Vienna, as a first officer of the division of research. Raymond H. Jebens from Patterson Foundry & Machine Co. is now engineer-economist with Office of Saline Water, Department of the Interior, Washington, D.C. D. Ryle Masson appointed head of South African scientific liaison office in Washington, D.C. He has been head of the CSIR information division in Pretoria. Succeeds Dr. Ronald G. Shuttleworth. Ernst Simon, on sabbatical leave from Weizmann Institute of Science, to be visiting scientist at National Institute of Arthritis and Metabolic Diseases, Bethesda, Md., for six months.
DEATHS Clayton J. Anderson, chemist with Texas Co., Beacon, N.Y., Dec. 1, 1959. George P. Benda, chief chemist, Lily Tulip Cup Corp., Sept. 7, 1959, Flushing, N.Y. Albert R. Br linker, 76, former president of Liquid Carbonic, Dec. 29, 1959, in Chicago.
more reproducible results with ultra-pure graphite shapes for: METALLURGY SEMICONDUCTOR PROCESSING LABORATORY REACTIONS A N D ANALYSES
Dr. Maurice Chaix, engineer, Houilleres du Bassig de Lorraine, St. Svold, France, Dec. 8, 1959. Dr. Emil Czapek, 68, retired former manager of cellulose-colloid chemistry for Olin Mathieson Chemical, Dec. 28, 1959. Fred Hilbert, director of production, Fritzsche Brothers, New York, N.Y., Nov. 26, 1959. Joined ACS in 1928. Roberto Jaramillo, general manager, Metales & Productos Apiones, Bogota, Colombia, Nov. 1, 1959. Albert B. Judson, retired, formerly lab technician at International Paper Co., Dec. 25, Glens Falls, N.Y. Joined ACS in 1917. Andrew J. LaBoiteaux, 66, sales representative for Semet-Solvay Division of Allied Chemical & Dye, Dec. 25, 1959. Edward A. MacKinnon, 72, former manager of organic chemicals division of Canadian Industries, Ltd., Dec. 28, 1959, Bennington, Vt. Dr. Lee B. Storms, director of research at Red Spot Paint & Varnish Co., Evansville, Ind., Dec. 15, 1959. Rees F. Tener, 63, assistant chief of testing and specifications section. National Bureau of Standards, Washington, D . C , Dec. 25, 1959. Joined ACS in 1927. Dr. Emilio Viale, 38, entomologist and head of agricultural chemical field development work for Hercules Powder, Dec. 23, 1959.
The exceptional properties of United ultra pure graphite have made it widely favored for crucibles, boats, funnels and similar parts. United offers you graphite shapes purified by the famous " F " Process (developed by United for A E C ) . This means you receive shapes machined to precise dimensional tolerances — " F " Process purified after machining — and safeguarded by multiple quality control. Your own processes are therefore more reliable, your results more reproducible. If you are engaged in any work that demands the utmost reliability of ultra pure graphite shapes, contact us. Our R & D and technical service staffs are ready to serve you and will prove they can meet your "crash" delivery schedules. Write today for full details!
Charles G. Ward, northeastern division sales manager for American Agricultural Chemical Co. before retirement in 1952, Dec. 31, 1959, Hingham, Mass. JAN. 2 5, I960
C& E N
999
This section includes: CHEMICALS EXCHANGE — Chemicals, Resins, Gums, Oils, Waxes, Pigments, etc.; EQUIPMENT MART—New Equipment, Instruments, and Facilities for Plant and Laboratory; and TECHNICAL SERVICES—Consultants, Engineering, Testing and Professional Services.
EQUIPMENT MART
Stainless Steel Tanks Oxygen cylinder 400 P.S.I.-Type J-l Size 24" x 45" - 7 7 Gal. Stainless steel 11 gauge, type 304
DIRECTORY SECTION
PU
Advertising Rates: Space rate is $40 per inch. Lower rates available on contract basis. An "inch" advertisement measures % " deep on one column. Additional space in even lineal inch units. Maximum Space—4" per Directory per publication. Set ads due 21 days in advance of l i c a t i o n ; c o m p l e t e p l a t e s — 1 8 days.
Gov.surplus tanks.Guaranteed perfect. V\" pipe thread a t both ends. Ideal for chemicals, gases, pneumatic use, hydraulics and liquids. T o d a y ' s v a l u e $300. O n l y $99.50. Terms 30 days net.
$
99 5 . 0
F.O.B. Chicago w t 150 lbs.
ILLINOIS M F G .& SUPPLY CO. 1829 S. State St., Chicago 16, III. Phone Victory 2-6633
EQUIPMENT MART USED EQUIPMENT
ASCO FOR SALE —USED EQUIPMENT
G LAN D
Spectrograph, modified Wadsworth mounting, Concave grating, 10,000 lines per inch. P r i c e SI,000.00
Complete
STOPWATCH CATALOG —FREE! The most advanced precision timing instruments designed for American industrial and Laboratory use. Write Dept. CE for Free "Century Timer Line" catalog, illustrating the most legible timers for your every purpose. HEUER T I M E R CORP. 441 Lexington Avenue New York 17, N.Y. Tel: OX 7-2150
For Rotary Seals Thermometer Ports Entry Tubes
Kawecki Chemical Company Boyertown, Pennsylvania
_
CHEMICALS EXCHANGE
* Teflon® construction * 2 4 / 4 0 standard taper joint •Supplied for 6mm or 10mm shafts and glass tubing
NITROSOBENZENE AVAILABLE IN RESEARCH QUANTITIES Write for prices and listing of other research chemicals
•Vacuum tight to 1 0 ' m m Hg.
Contamination
AND Freeze
Proof
* Inner and outer " 0 " ring seals * Operating temperatures as highas200°C
±
ASCO "QUORN" STANDARD TAPER SLEEVES • • • • • •
No contamination—attacked by metallic sodium only No seizure or "freezing" Self-lubricating No leakage Heat resistant from —75° C to 300° C Long life — can be easily cleaned, and used almost indefinitely
A new development in the field of jointed glassware, the Asco "Quorn" Standard Taper Sleeve is an elongated cone of polytetrafluorethylene film, .003" thick. Accurately tapered to fit tightly over the male ground glass cone an extra tight seal is formed with the female cone without the' use of grease, and problems of contamination due to lubricants and leaking ground joints as well as joint seizure now become obsolete.
a— c O
JOINT SIZE
PER DOZEN
10/30 14/35 19/38 24/40 29/42 34/45 40/50 45/50 50/50 55/50
17.10 17.67 18.24 19.95 21.09 22.80 25.08 27.36 30.78 35.34
* Will not wear loose
^ V ¥ ¥ ¥ ¥ V ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^
Available in four sizes, 24/40, 29/42. 34/45, and 45/50 standard taper, and is supplied for either 6mm. or 19 mm. shafts or tubing.
JAN.
2 5,
I960
n-PROPYL BROMIDE
PRICE, Gland Only 24/40 $11.75 ea. 29/42 13.50 ea. 34/45 14.75 ea. 45/50 17.50 ea.
Over 3,000 reagents in stock., .inquire for others EASTERN CHEMICAL CORPORATION 34-N Spring Street, Newark 4 , N . J .
Dept. CEN-4
c
ARTHUR F. SMITH COMPANY 311 ALEXANDER ST., ROCHESTER 4, N.Y.
CONSTANT TEMPERATURE BATH for routine laboratory use for viscosities densities refractive index, etc. • Automatically controlled. • T h e r m o r e g u l a t o r s e n s i t i v i t y .004° F. • Indirect fluorescent l i g h t i n g . • A l l c o m p o n e n t s i n single h o u s i n g . Now in service in over 100 of the foremost laboratories W R I T E F O R B U L L E T I N 17 VISCOMETERS THERMOREGULATORS
SCIENTIFIC DEVELOPMENT CO.
ARTHUR F. S M I T H CO.
C&EN
33 RICHDALE, CAMBRIDGE 40, MASS.
* No breakage of parts or freezing
