52 A
ANALYTICAL
CHEMISTRY
DO IT WITH SOUND WAVES
A DOUBLE
MONOCHROMATORSPECTROMETER
#
Fragmentation
•
Impregnation
φ
Dispersion
•
Flocculation
ULTRAVIOLET
#
Emulsification
•
Extraction
#
Coagulation
•
Disintegration
VISIBLE AND
Are you seeking time-saving, cost-cutting ways to im prove chemical or industrial processes? Raytheon Sonic Oscillators are practical, powerful, simple-tooperate laboratory tools that open up new fields of research into the application of sonic vibrational energy. Get the facts on what others are doing. Write for detailed bulletins and literature on recent applica tions in research. Address Dept. 6270-AC.
for the
INFRARED RAH·"»
The optical system of the Farrand Double Monochromator has been designed to re duce scattered radiations to a negligible magnitude, to attain highest spectral purity, to isolate narrow wave lengths and to obtain optimum resolution. By simply interchanging prisms, the instrument may be operated at any chosen spectral region within the range of 0.2 to 35 microns.
RAYTHEON MANUFACTURING COMPANY EQUIPMENT SALES D I V I S I O N W A L T H A M 54, MASSACHUSETTS
District Offices: Boston, New York, Cleveland, Chicago, New Orleans, Los Angeles (Wilmington) San Francisco, Seattle
Complete details of design, operation and performance are given in Farrand Bulletin # 8 0 6 . Write for a copy. PRECISION \ _ OPTICS. • • ELECTRONIC H
FARRAND OPTICAL CO., Inc.
AND
International Division: 19 Rector Street, N. Y. C.
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SCIENTIFIC H INSTRUMENTS^^
SONIC OSCILLATORS
B R O N X BLVD. a n d EAST 2 3 8 t h ST., N E W Y O R K 7 0 , N . Y .
Use teeo Sulfur for AST M Method
Deferminator E30-46
Leco 1H-10S Induction Furnace with 400 Sulfur Determinator and Purifying Train
LABORATORY EQUIPMENT CORP. ST.
JOSEPH
1,
MICHIGAN
