SCAIMNIIMG POROSIMETER * THE MOST ADVANCED POROSIMETER EVER DEVELOPED PROVIDES INFINITE RESOLUTION! W E CHALLENGE ANY "CONNECT THE DOT" (\ POROSIMETER TO MATCH SCANNING POROSIMETER CURVES! • Pore size distribution measurements 0 - 6 0 , 0 0 0 PSI including full i n t r u s i o n / e x t r u s i o n curves in 5 minutes plotted on an XY Recorder. Continuous data on both axes rather than a series of points. • Pore volumes measured vs. pressure or directly vs. pore radius. • No mercury compressibility or blank correction required. • No o i l / m e r c u r y mixtures t o clean up. • No tools required. All pressure seals made w i t h t w o fingers. • M i c r o p r o c e s s o r data reduction for plots of volume and area dis tribution functions, °/o volume, surface area and slope. " D o n ' t M a k e A M i s t a k e — B e f o r e Y o u Buy A P o r o s i m e t e r S e e O u r s — C o m p a r e ! "
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are many applications where the non destructive nature of the IR reading would simplify sample handling, as in pharmaceuticals and foods. To compete effectively with GC, IR must be able to handle systems where there are a number of components, each of which is changing indepen dently. With the advent of micropro cessors, several instruments with true multicomponent capability are now available in the laboratory field, such as the Beckman Microlab series, or the Foxboro Analytical MIRAN-80 and 980 Series. The first example of the industrial use of this multicompo nent IR technology is for the measure ment of hazardous vapors in chemical and semiconductor manufacturing op erations. The Foxboro Analytical MIRAN-801 simultaneously measures up to 10 components sequentially at up to 24 locations around a plant. This development was made possible by using a continuously variable circular optical filter, which will stop at any of the predetermined locations called for in the microprocessor program, and the ability to store internally all of the needed interrelated calibration data. It seems likely that the next years will see multicomponent capability, operating in the fingerprint region and combined with MlR sampling tech nique, opening many applications pre viously thought to be inaccessible to on-line, real-time process measure ment. Acknowledgment We are indebted to John Kocak for his participation in planning this arti cle and in providing much of the tabu lar data, and to Paul A. Wilks, Jr. for his helpful review.
ROTAMANTLES
A biographical sketch and photo graph of Martin Frant may be found in the REPORT, 3b> HEATING TAPES
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Electrothermal, Inc. 264 Suburban A v e . , Deer Park, New York 11729 Phone: 5 1 6 - 6 6 7 - 6 7 3 5 T L X 9 6 1 3 7 4 Electroto CIRCLE 63 ON READER SERVICE CARD 1344 A • ANALYTICAL CHEMISTRY, VOL. 52, NO. 12, OCTOBER 1980
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Gerald M. LaButti is product line manager for Infrared Systems at the Wilks Infrared Technology Center of Foxboro Analytical. He holds a B.S.E.E. degree from the University of Rhode Island, and an M.B.A. from Columbia University. Most of his re search is in the. application and con figuration of infrared analyzers used in the process industries.
