PHOENIX PRECISION INSTRUMENT COMPANY Manufacturers of Scientific Instruments and Automatic Control Systems for Industry and Research for two decades . . .
Automatic Indicating Differential Refractometers Aerosol, Smoke & Dust Photometers Automatic Recording Amino Acid Analyzers
Ratio Recorders Variable Gradient Devices
Air Pollution Monitors
Light Scattering Photometers Visual Differentia Refractometers
WE INVITE YOUR INQUIRIES
P H O E N I X F A C I L I T I E S A N D P E R S O N N E L A R E A V A I L A B L E FOR . C O N S U L T A T I O N . RESEARCH · SERVICE · D E V E L O P M E N T OTHER PHOENIX PRODUCTS Dual Photomultiplier Type Photometers Electron Multiplier Photometers Turbidimeters Colorimeters Automatic Recording Mass Collecting Differential Refractometers Regulated High Voltage Power Supplies D. C. Amplifiers Maple Syrup and Honey Comparators Optical Benches
Monochromatic Light Sources Color Standards Lenses, prisms, mirrors, and reticles Colorimetric Absorption Cells Precision Electro-phoresis Cells Precision Bore Glass Tubing—round, square, rectangular, and conical {from .002" I.D. to 6" I.D.) tolerance plus or minus .0002" Flanged glass pipe {VA" I.D. to 6" I.D.) Flow meters and tubes
PHOENIX PRECISION I N S T R U M E N T
Manometers Glass Venturi tubes and nozzles Glass pumps and valves Glass sheet, plate, rod, and balls Recording Flow Photometer Continuous Flow Colorimeter Recording Differential Refractometers for Process Streams Nephelometers Continuous Recording Nephelometers
COMPANY
3800 North Fifth Street, Philadelphia 40, Pennsylvania Circle No. 151 on Readers' Service Card
32 A
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ANALYTICAL CHEMISTRY
