SZ-Σ80
electronic
COLOR
CONTROL
SPECTRO COLORE METER Computerized Color Measuring Difference Calculating Meter
FEATURES
APPLICATION • Paper industries • Metal • Consumer electric appliances • Paint or ink • Food manufacturer • Fishing • Cosmetics • Drug • Dyeing and clothing • Automobile and motorcycle • Dental college or hospital
We also supply
FOR SCIENTIFIC
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1. Indicates relative spectral distribution. 2 Color measurement using 3 light sources. A. C. and D65 in 2-degree 3. Allows measurement in 10-degree field under D65. 4. Metamerism analyzing capability 5. Standard white plate calibrated according to DIN5033. 6 SZ-180 inspected with tinted glass filter (umber, orange. green, and blue, each inspected by Japan Coior Research Institute) according to method recommended by Japan Color Science Association of Japan. 7. Accuracy: Stability tolerance — Less than 0.2% at full scale of standard white plate (24 hours). Drift — ±0.02 at 0 8 CRT displays relative spectral distribution, color difference analysis chart, and various UCS chromaticity diagrams. 9. Amount and orientation of color difference can be verified at a glance Color names are displayed on the coordinates.
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best left to those who have made that their business, namely, the computer scientists. Although many good pro grammers can be found among chem ists, it is unrealistic to expect that such persons will spend their time teaching programming. Such an activ ity would divert their talents from their primary task, that of teaching and doing research in chemistry. It can be very beneficial, however, to maintain a link between chemistry and computer science in the form of a faculty or staff member who can serve as an interface between the two disci plines. It is important that this be a permanent position: The usefulness of such a person depends crucially on the development of long-term associations both with the needs of the chemistry department and with developments in computer science. Acknowledgment The authors wish to acknowledge with thanks suggestions for this article from Professors Edward H. Piepmeier and Frank A. Settle, Jr.
6-9. Higashi-kanda 2-chome. Chiyoda-ku. Tokyo 101 Japan TEL: 03-864-8761. TLX: J25638 ZIPANGU. FAX: 03-864-8766
CIRCLE 193 ON READER SERVICE CARD
O u r MICRO/IR System runs transmittance or reflectance spectra on samples as small as 10 microns. Integrated into the power ful Qualimatic FT-IR spectro meter, our MICRO/IR System features a microscope with a horizontal stage up to 6 " χ 6," a turret of objectives (4x, 32x) for easy sample location and uncompromised performance,
Cassagrainian optics, and an integral, permanently aligned 0.25 mm MCT detector. Send today for our MICRO/IR System Brochure to BIO-RAD, Digilab Divi sion, 237 Putnam Avenue, Cambridge, MA 02139. Or call (800) 225-1248.
BIO-RAD
Digilab Division
DIGILAB MICRO FT-IR
.. .because you never know when you'll need high performance.
CIRCLE 18 ON READER SERVICE CARD 392 A ·
ANALYTICAL CHEMISTRY, VOL. 57, NO. 3, MARCH
1985
Galen Ewing (right) received his for mal schooling at the College of Wil liam and Mary and the University of Chicago. His industrial experience in cludes work at the Sterling- Winthrop Research Institute and at Central Scientific Company. His chief inter est, however, has been in education. He has taught at Blackburn and Union Colleges and at New Mexico Highlands and Seton Hall Universi ties. Now retired, he continues writ ing textbooks in analytical instru mentation and electronics. Maarten van Swaay received his edu cation in the Netherlands and at Princeton University. In 1963, he joined the faculty of Kansas State University as an analytical chemist. Over the years, he became progres sively more interested in instrumen tation and then in computer applica tions. For the past three years, he has been a full-time member of the De partment of Computer Science at Kansas State, still maintaining ties with his former colleagues in chem istry.
