Pittsburgh Conference PRINCETON APPLIED RESEARCH CORP. P. O. Box 565 Princeton, N. J. 08540 Exhibiting: Model 170 polyfunctional electrochemistry system ; Model 171 polarographic analyzer and recorder; modular KÏM-compatiblo instrument system for processing low level signals in spectroscopy and other applications; other advanced electrochemical instruments; other signal processing instruments.
RESEARCH ANALYSIS ASSOCIATES, INC. 165 Dodge Ave. Stratford, Conn. 06497
Years ahead of its time! The Orion system for pH, ion activity or potentiometric data accumulation. Interested?
Exhibiting: Reflectance and transmission cells and accessories for infrared; UV-Vis and flame atomic spectroscopy; also to be shown—a new radiospectrometer for analytical determination of nuclear quadrupole moment.
RESEARCH ASSOCIATES, INC. 555 E. Linden Ave. Linden, N. J. 07036
RHO SCIENTIFIC, INC. P. O. Box 295 Commack, Ν. Υ. 11725 Exhibiting: Dryseal desiccators ; Meter Monitor (convert any meter into controller) ; Spoctrodewar (for low temperature spectroscopy); rapid frac tion collector; glass centrifugal p u m p ; P.C.L. osmometer; universal tempera ture controller; micro DTA apparatus.
O. C. RUDOLPH & SONS, INC. P. O. Box 446 Caldwell, N. J. 07006
SADTLER RESEARCH LABORATORIES, INC. 3316 Spring Garden St. Philadelphia, Pa. 19104 Exhibiting: Reference spectra (over 115,000) for IR, UV, N M R , and D T A ; this will be on microfilm if one has a particular spectrum in which he is inter ested, a. free copy will be provided; lab oratory and computer services, and courses given, will be discussed also.
digital pH/mv meter model 801 • 4-digit data display with automatic decimal polarity sign. • Binary-coded decimal output for card or recorder or computer interfacing. • ±0.001 pH to 13.999 pH in 0.001 increments • —999.9 to +999.9 mv in 0.1 increments and
point, out-of-range input and tape, printer, magnetic data and with ±0.001 repeatability. with ± 0 . 1 repeatability.
digital printer system model 851 • Prints exact readings to four significant figures. • Eliminates interpolation and extrapolation errors . . . requires no zero or range adjustments. • Prints sample numbers from 0 to 999 automatically, manually or by elapsed time mode. • Provides accuracy of better than 0.05 seconds. manual electrode switch model 605 • Measures up to six samples with one pH meter. • Measures up to six ions in one sample. • Eliminates "crosstalk" by complete isolation of electrode positions. • Can be used with any other pH meter and all Orion specific ion meters. For complete information on this unique analytical system or any of the individual components, write . . . W. H. Curtin & Company, P. O. Box 1546, Houston, Texas 77001.
SARGENT—WELCH SCIENTIFIC CO. 7300 North Linder Ave. Skokie, III. 60076 Exhibiting: ChemAnal system—a modular approach to teaching optical methods of chemical analysis, spectro scopes, spectrometers, etc.
W . H. C U R T I N CURTIN
&
COMPANY
SCIENTIFIC A P P A R A T U S • CHEMICALS · LABORATORY FURNITURE H O U S T O N - TULSA - LOS ANGELES · N E W O R L E A N S · A T L A N T A · S A N FRANCISCO D A L L A S · J A C K S O N V I L L E . W A S H I N G T O N · W A Y N E . N. J · M E X I C O C I T Y » M O N T E R R E Y G E O R G E T. W A L K E R a CO. DIVISION - M I N N E A P O L I S . M I N N E S O T A
Circle No. 97 on Readers' Service Card
VOL. 4 1 , NO. 2, FEBRUARY 1969
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