24, Md.; New York 12, Ν. Υ., stocking all leading makes of equipment, instruments, supplies, chemicals used in laboratories of all types. Instrument repairs. Glass shop. Technical service in instrumentation prob lems.
KONTES OFFERS . . . Y o u r B e s t G a u g e o f Quality
Wollensak Optical Co. 8 5 0 Hudson A v e . Rochester, Ν . Υ .
Manufacturer of high-speed motion pic ture cameras and lenses. The Fastax sys tem includes all equipment necessary for an industrial and military high-speed photo graphic taking laboratory. Worklon, Inc. 2 5 3 West 28th St. N e w York 1 , Ν . Υ .
Manufactures acid-resistant shirts, pants, coveralls, men's and women's lab coats, industrial apparel, and service uniforms for ever ν need, every industry, of Orion and Dynel. Yonkers Laboratory Supply Co., Inc. 7 0 Palisade A v e . Yonkers, Ν . Υ .
Dealer-manufacturer—carries laboratory e q u i p m e n t , glassware, chemicals. H a s own glassblowing d e p a r t m e n t for m a n u f a c t u r e , repair of glassware, according t o specifica tions. Q u o t a t i o n s upon request. NEW UPPINCOTT-McLEOD
Carl Zeiss, Inc. 4 8 5 Fifth A v e . N e w York 17, Ν . Υ .
I m p o r t s from West G e r m a n y Carl Zeiss research, l a b o r a t o r y , polarizing, a n d stereo microscopes, micro movie e q u i p m e n t , r e fract omet ers, technoscopes. polarimeters, hand spectroscopes, spectrophotometers, phase-contrast u n i t s , etc.
NEW BENNERT TYPE MANOMETER
GAUGE
In addition to t h e unique mercury self-leveling device which allows Automatic Zeroing {U.S. P a t . No. 2,608,090), t h e new Lippincott-McLeod Gauge has Automatic Stops which assure precise alignment and reproduction oi t h e reading and evacuating positions. Vacuum readings are made instantly. Other features include a built-in trap, precision cap illaries, interchangeable scales, cast aluminum base and integral mounting spring. Ranges: Size A, 0 - 1 m m ; B, 0-5 mm ; C, 0-10 m m ; D, 0-15 mm. Ea. $ 3 7 . 5 0
The wide range, low price and ruggedness of t h e new Kontes Bennert Manometer make it an ideal gauge for routine vacuum measurements including vacuum distillation and drying operations. A move able scale actuated by a rack and pinion assembly enables precise " O " adjustment. Range, 240 mm., subdivisions, 1 m m . T h e alu minum base is finished in modern blue gray hammertone and provided with a carrying handle. Complete as described, with mercury. Ea. $ 2 7 . 5 0
Write /or free Bulletin No. VE-S irhich describes Vacuum Gauges, Diffusion
Pumvs
and oilier vacuum
glassware.
KONTES GLASS COMPANY · V i n e l a n d , N.J Advertisers a p p e a r i n g in " L a b oratory Supply C e n t e r " section of A N A L Y T I C A L CHEMISTRY, M a y 1 9 5 5 through ApcH 1 9 5 6
For further information, circle numbers 61 A-1, 61 A-2 on Readers' Service Card, page 63 A
ALL
Analytical Measurements, Inc. 5 8 5 M a i n St., C h a t h a m , N . J. A r a p a h o e Chemicals, Inc. 2 8 0 0 Pearl St., Boulder, Colo.
THE CHEMICALS NORMALLY USED IN THE LABORATORY
Black Light Corporation of America 5 1 1 4 Walnut Grove A v e . , San Gabriel, Calif. Clark Microanalytical Laboratory P.O. Box 17, Urbana, I I I . Dimco-Gray Co. 2 0 7 East Sixth St., Dayton 2 , Ohio Ealing Corp. Box 9 0 , Natick, Mass. G o w - M a c Instrument Co. 100 Kings Rd., M a d i s o n , N . J.
OVER 4 0 0 0
Johns-Manville Corp. 2 2 East 40th St., N e w York 16, Ν . Υ. David N . Kendall 1 0 3 0 Sherman A v e . , Plainfield, N . J . Kopp Laboratory Supplies, Inc. 1 6 8 0 Second A v e . , N e w York 2 8 , Ν . Υ . LaMotte Chemical Products Co. Towson 4 , M d . Nuclear Instrument and Chemical Corp. 2 2 9 West Erie St., Chicago 1 0 , I I I . Quartz Products Corp. 6 8 8 Somerset St., Plainfield, N . J . Research Chemicals Co. 2 8 1 2 N o . San Fernando Blvd., Burbank, Calif.
N O . 4,
FROM A SINGLE SOURCE
Complete stocks of MC&B items are carried at our East Rutherford and Norwood plants and a r e available either through your laboratory supply dealer or from the East Rutherford or Norwood offices.
OUR 4000 ICAL YOU
N E W BVi" X 1 1 " CATALOG, LISTING MORE THAN REAGENT CHEMICALS, BIOLOGICAL STAINS, CHEM INDICATORS A N D SOLUTIONS WILL BE SENT T O U P O N REQUEST.
MATHESON
COLEMAN & BELL
DIVISION O f THE MATHESON COMPANY, INC. Manufacturing
Research Specialties C o . 1 1 4 8 Walnut St., Berkeley, Calif.
VOLUME28,
INORGANIC REAGENTS FINE ORGANICS STAINS AND SOLUTIONS
Matheson, Coleman & Bell Reagent Chemicals include practically all of the items used in research and ana lytical work. The Reagent Inorganic Chemicals carry upon the label a statement showing the maximum limits of impurities allowed. The Reagent Organic Chemicals a r e manufactured to pass the specifications shown in our price list. In addition to A.C.S. Inorganic and Reagent Organic Chemicals w e offer many items of U.S.P., N.F., Practical and Technical quality.
Chemists
CAST RUTHERFORD, N I W JIRSIY · NORWOOD (CINCINNATI), OHIO For further information, circle number 61 A-3 on Readers' Service Card, page 63 A
APRIL1956
61 A
