New Products Spectrometer readout console with an integral digital computer provides total system control as well as arithmetic computations. The console, supplied with general purpose spectrochemical software, offers a variety of output op tions including cathode ray tube, tele typewriter, and X-Y plotter. The unit is also available as an interface between existing spectrometers and computers and as a standard readout device with computer capability expansion. $35,000 to $55,000. Angstrom, Inc. 313-697-8058 428 Tunable optical filter (TOF) is an all solid state device which changes its optical transmission in accordance with the frequency of an applied electrical signal. There are no moving parts. The resolution of the TOF is excellent. For example, at 5000 A the resolution is 1-2 A. The underlying theory was developed by R. W. Dixon of Bell Lab oratories in 1967. Applications for the TOF include all types of optical spec trometers as analytical instruments. Possibilities in pollution detection and industrial process control also exist. Isomet. 201-337-3811 429
from the specialists in liquid chromatography
The first $2900 high pressure LC Here's a new liquid chromatograph with all the important features you've asked for. It's our Model 3 1 0 0 Liquid Chromatograph. For $2900 you get 3000 psi operation, dual wavelength UV detectors (254 n m and 280 n m ) , ease f operation, simplicity j n d reliability. '-MI whether you're buying \ our first, second or third LC , you'll agree that if the features are as good as we ••Λν, this instrument is a L;I oat buy. A n d we're ready tn prove it. Let us tell you all .l'.'out our 30 day free trial.
Continuous automatic measurement and recording of total organic carbon in water are provided by the TOC-UNOR analyzer. Organic substances are mea sured through an infrared C0 2 analyzer which has a meter calibrated in mg of C/l. $8860. The company also makes an oxides of nitrogen analyzer, ozone monitor, total hydrocarbon ana lyzer, and a total sulfur analyzer. The oxides of nitrogen analyzer sells for $5870. Bendix Corp. 219-233-4141 430
Model 916 thermal evolution analyzer (TEA), plug-in module for the com pany's thermal analysis system, uses hydrogen flame ionization detection to measure organic carbon. The company also has a new cell base to give five fold higher sensitivity in differential scanning calorimetry. The TEA mod ule sells for $4350; the new cell base for the company's 990 costs $2500. Du Pont. 302-453-2214 431
Chromatronix, Inc., 2743 Ninth Street, Berkeley, CA 94710. Phone (415) 841-7221
CHROMATRONIX CIRCLE 36 ON READER SERVICE CARD
ANALYTICAL CHEMISTRY, VOL. 44, NO. 7, JUNE 1972 ·
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