and atomic energy plants. plumbing is required.
No heat or
Ercona Camera Corp. Scientific Instrument Division 551 Fifth A v e . N e w York 1 7 , Ν . Υ.
U. S. representatives for Carl Zeiss Jena Optical Works. Microscopes, refractometers, interferometers, polarimeters, spectro graphs, spectroscopes, photometers. Catalogs available on request. Farrand Optical Co., Inc. Bronx Blvd. & East 238th St. N e w York 7 0 , Ν . Υ.
Research, development, design, and pro duction of precision optics and electronic and scientific instruments, including electrostatic electron microscopes, ultraviolet, visible, and infrared spectrometers, fluorometers, etc.
meters, oscillators, amplifiers, slotted lines, UHF equipment. Gow-Mac Instrument Co. 100 King Road Madison, N. J. Besides thermal conductivity gas analyzerrecorders and controllers, and portable units for plant and laboratory, Gow-Mac sells sensing elements for vapor-phase chroma tography and general use. Emil Greiner Co. 2 0 - 2 6 North Moore St. N e w York, Ν . Υ.
Manufacturer and distributor of general laboratory apparatus. Specialties such as manostats, microburets, McLeod gages, and petroleum testing instruments. Two most recently advertised items of interest are the molecular filter and the needle valve buret. Bulletins describing all items are available.
Fischer & Porter Co. Hatboro, Pa.
Manufactures a complete line of industrial control instrumentation for measuring, re cording, and controlling process variables. Centralized control panels, data-handling systems, chlorinators, and industrial glass products permit a complete control "pack age" from measurement to product control.
Manufacturer of Standard weights and measures, precision balances, surveying instruments, microscope field finders, pre cision patterns on glass. Hanovia Chemical & Mfg. Co. 100 Chestnut St. Newark 5, N. J. Manufacturer of mercury arc lamps for photochemistry, vitamin D irradiators, germicidal, blacklight, compact arc lamps, and hydrogen arcs. Harshaw Scientific Div. of the Harshaw Chemical Co. 1945 East 97th St. Cleveland 6, Ohio Authorized distributor for the leading manufacturers of laboratory equipment,
4
CENTRIFUGES
tor'56 by C.S.&E.
Fish-Schurman Corp. 7 0 Portman Rd. N e w Rochelle, Ν . Υ.
Hoeppler and Ubbelohde viscometers, Schmidt & Haensch Lippich and other type polarimeters, Royal Berlin porcelain filtering crucibles, filtering tubes, ball mills, etc. U. S. agents for Jena Glass Schott & Gen. optical, technical, and laboratory glassware used in analytical chemistry.
Backed by fifty years of experience the Chicago Surgical a n d Electrical C o m p a n y presents the " F o r w a r d Look, 1 ' in the field of centrifuges.—Not only does this e m b o d y improvement of design, but in e v e r y phase of con struction a n d craftsmanship . . . To one e n d ; perfection of equipment for medical, chemical, a n d research laboratories.
Model 4 0
Fisher Scientific Co. 7 1 1 Forbes St. Pittsburgh 19, Pa.
Developer, manufacturer; and distributor of instruments, apparatus, furniture, and chemicals for all laboratory needs. Service laboratories are maintained in all Fisher plants where trained technicians service, re pair, and recalibrate fine instruments. Each plant also maintains demonstration labora tories, for introduction of new instruments. Publisher of The Laboratory, quarterly. Houses the Fisher Collection of Alchemical and Historical Pictures; reproductions avail able to laboratories.
Model 5 0
Two new 6-tube 15 ml. safety angle centrifuges, Models 40 and 50 are fully enclosed and have safety cap for loading. There are no exposed revolving parte and danger from flying glass is eliminated. Distinctive C. S. & E . styling with Sand-Tan Finish. Streamlined aluminum housing. Speed of Model 40 is constant 1700 R P M , while Model 50 has Ohmite rheostat giving speed regulation from 0 t o 5000 R P M , with built-in timer. Motor of Model 50 is ball-bearing, lubricated for life. Easy loading and unloading. Embodying many safety features, the Model 10 (Size 1) and Model 20 (Size 2) C. S. & E . Centrifuges are de signed for use in medical and industrial laboratories. Cabinets are of most modern furniture type design finished in Sand-Tan with black Formica top; electric brake eliminates brake shoes; built-in Powerstat gives stepless speed control; dial type speed indi cator indicates speed up to 6,000 R P M . ; auto matic electric timer; all controls are interlocked for operator safety. Motor is lubricated for life. Model 10 will accommodate all types of heads suitable for Size 1 Centrifuges; Model 20 takes all Size 2 heads and accessories. Both units offer convenient storage space for accessories. Model 10 comes with H H P motor; Model 20 has H H P motor. B o t h Model 10 models may be supplied with refrigera Size 1 tion for operation below room temk perature.
Floridin Co. P. O . Box 9 9 8 Tallahassee, Fla.
Manufacturer of adsorbents and desiccants. Florex fuller's earth, Florite activated bauxite, and Florisil synthetic gel available in a variety of mesh sizes. Florisil widely used in chromatography.
l-
General Electric Co. Instrument Department 4 0 Federal St. West Lynn, Mass.
Wide range of process and analytical instruments includes recording controllers, pyrometers, leak detectors, dew point recorders, spectrophotometers, and oscillo graphs. New instrument technical training school open to G-E customers; free bulletins available on all products.
SEND FOR BULLETIN
Model 2 0 L Size 2
1/
THe ^1 Λ NEW tOHWAHH LAB-LOOK
K
General Laboratory Supply Co. P. O . Box 2 6 0 7 Paterson, N . J .
A complete line of laboratory supplies including glassware, apparatus, instruments, organic and inorganic chemicals.
Y O N K E R S LABORATORY SUPPLY CO.
General Radio Co. 2 7 5 Massachusetts A v e . Cambridge 3 9 , M a s s .
Manufacturer of electronic apparatus— Variac autotransformers and speed con trols, ^ stroboscopes, resistors, inductors, capacitors, impedance bridges, megohm-
V O L U M E 28, NO. 4, A P R I L
W. & L. E. Gurley 5 1 4 Fulton St. Troy, Ν . Υ.
1956
Dlrs. and Mfrs. of Laboratory Scientific Apparatus 7 0 Palisade Ave., Yonkers 2, Ν. Υ. For further
information circle number 53 A on Readers' Service
Card, page 63 A
53 A
