PITTSBURGH EXPOSITION
digital readout; semi-micro and micro balances; and the ultra-micro UM 7 giving a precision of ±0.1 microgram; the Ρ series top-loading precision bal ances offer capacity-precision ratios never before available in this type bal ance, ranging from the P120 (120 g ca pacity, ±0.5 mg precision) to the Ρ 10 (10 kg capacity, ±0.5 g precision). MiCRO-TEK INSTRUMENTS, CORP., SUBSIDIARY OF TRACOR, INC. 6 5 0 0 Tracor Lane Austin, Texas
Proven! . . . in dozens of Universities in the U.S.A. and abroad during the last academic year
Exhibiting: Model MT-220 gas chro matograph series; Model MT-150 gas chromatograph series; automated lab oratory gas chromatography systems; Unicam spectrophotometers; and R. L. Stone DTA and TGA systems. MIDVALE-HEPPENSTALL CO. Nicetown Philadelphia, Pa. 19140
Exhibiting: Loomis 20-ton hydraulic press with air power unit; pellet form ing die for x-ray spectroscopic analysis. MIDWEST INSTRUMENT CO., INC. 4 7 0 1 W . National Ave. Milwaukee, Wis. 53214
Exhibiting: Immersion samplers, spectrographic sampling molds, pin standards, carbon, oxygen, nitrogen, and hydrogen analysis equipment and companion induction furnace, induction furnace crucibles, precision glass, and ceramic pin tubes.
Modular ANALYTICAL Instruments
MILLIPORE CORP. Ash by Rd. Bedford, Mass.
Exhibiting: Millipore (membrane) fil ters, filter holders and associated appa ratus for the microchemical, instrumen tal, and physical analysis of contami nants in fluids; among the analytical techniques included in the new techni cal literature to be distributed will be spectroscopy, chromatography, x-ray diffraction, radiography and nuclear scaling, microscopy, and gravimetric measurement. MILTON ROY CO. P. O. Box 1 2 1 6 9 St. Petersburg, Fla.
33733
Exhibiting: A complete line of flow positive displacement reciprocating pumps for laboratory applications; hy drogen generation and purification equipment; and automatic chemical an alytical equipment. MINE SAFETY APPLIANCES CO. 2 0 1 N. Braddock Ave. Pittsburgh, Pa. 15208
for Teaching Analytical Chemistry and for Scientific and Industrial Research Grating Spectrophotometer Polarographic Instruments Visible Colorimeter Conductance Bridge Potentiostat
M a n u a l pH Meter Recording pH Meter Coulometric Titrator Thermometric Titrator Prism Spectrophotometer
New, at 7 967 Pittsburgh Conference—gas
chromatograph
A complete laboratory course manual is furnished with the instruments. A. R. F. Products, Inc., in association with the National Science Foundation and Dr. Galen W . Ewing, author of "Instrumental Methods of Chemical Analysis," has developed a new line of modular instruments for teaching and research. The versatile transistorized units enable scientists, teachers and students to assemble many different instruments at a moment's notice to implement such major analytical methods as potentiometry, electrodeposition, conductimetry, coulometry, p o l a r o g raphy and thermometric and optical methods. Write for brochure which gives complete details and price
ARF
A. R. F. PRODUCTS, INC. Engineers and Manufacturers of Precision Electronic Equipment
P. O . Box 5 7 , Raton, N e w Mexico 8 7 7 4 0 — P h o n e 5 0 5 4 4 5 - 2 7 8 9
PITTSBURGH CONFERENCE
4th Floor
Booth F 37
Circle No. 70 on Readers' Service Card VOL. 39, NO. 2, FEBRUARY 1967
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