now you can automate your data Thomas PEAK DETECTION SYSTEM

AutoAnalyzer® operators... your chemistry has been automated

now you can automate your data Thomas PEAK DETECTION SYSTEM • Saves time and increases productivity • Eliminates plotting and interpretation of curves, thereby reducing human error • Provides computer compatibility • Converts AutoAnalyzer® transmittance percentages to concentration values in digital printed tape form

Peak Detector

• Contains "time window " printout identified by the letter "R" on the tape • Gives immediate warning of deviation from linearity • Adapts to most AutoAnalyzer® methods • Provides permanent printed tape record

PEAK DETECTION SYSTEM, Thomas Model 70. A combination Readout-Converter-Printout unit with linear/+log/—log response, for coupling to standard Technicon AutoAnalyzer or to spectrophotometers with a 1-volt or 100-mv output. Nixie® display shows concentration derived as a factor of absorbance or transmittance. Prints positive and/or negative peaks with identification numbers. Adjustable "time window" preserves synchronization despite interspersed washes and sloughs. Provides BCD output for coupling to tape punch or card punch or other computer accessories. Without potentiometer 3,500.00 Retransmitting Potentiometer for connecting Peak Detector to single channel AutoAnalyzer recorder 200.00 Ditto, for double channel AutoAnalyzer recorder . . . . 200.00

AutoAnalyzer

Test Sample Code Cup

Concentration

AUTOANALYZER® is a registered trademark of Technicon Corporation and NIXIE® is a registered trademark of Burroughs Corporation.

Detailed bulletin sent upon request

A R T H U R H. T H O M A S C O M P A N Y Scientific Apparatus and

Reagents

V I N E S T R E E T AT 3 R D · P.O. BOX 7 7 9 · PHILADELPHIA, PA. 1 9 1 0 5 , U.S.A. CIRCLE 176 ON READER SERVICE CARD

80 A

.

ANALYTICAL CHEMISTRY, VOL. 43, NO. 13, NOVEMBER 1971