New Cary-White Model 90 Infrared Spectrophotometer
OFFERS OUTSTANDING PERFORMANCE WHEN IT'S MOST IMPORTANT ...WHILE SCANNING!
Cary 'dynamic* specifications define Model 90 performance while scanning—not just in static operation. For instance a double-beam 18-minute scan can be run on the ratio-recording Model 90 with photometric accuracy of 0.2% on 0-100% Τ scale, or 0.1% on expanded scale, with resolution better than 1 c m - 1 and S/N between 30/1 and 1D0/1. For longer scans resolution is up to 0.25 c m - 1 . Liquid can be sample sample
helium or incandescent samples are handled with ease. Very high or low temperature materials scanned with accuracy because energy for the source is chopped only before it passes through and reference cells, thus radiation from the sample is not detected as transmitted energy. Large space (over 10 inches long) allows use of special equipment such as cryostats or furnaces.
Versatility for I R work—differential analysis and measurements of absolute intensity, or small absorbance differences at high absorbance—is provided by Model 90. Scan range: 4000 to 450 c m - 1 . Strip chart recorder coupled with scan drive permits many, c m - 1 scale expansions, allows scan speed changes during operation without affecting display. Scan time is variable from 2 minutes to over 1000 hours. APPLIED PHYSICS CORPORATION 2 7 2 4 S O U T H P E C K R O A D · M O N R O V I A , CALIFORNIA
INSTRUMENTS Raman/UV/IR Recording Spectrophotometers · Vibrating Reed Electrometers and Amplifiers
