COOL CRYSTALS TO - 8 5 ° C FORX-RAY DIFFRACTION, NMR, ESR, WITH AIR-JET XR-85-1 FTS Systems, Inc.'s Air-Jet XR-85-1 Crystal Cooler provides remote digital temperature control to 0.1 °C using a one cubic foot per minute directed air stream through an 8-foot flexible delivery line. The XR-85-1's mechanically refrigerated heat exchanger allows temperature ranges from - 8 5 " C to +100°C. The remote gas stream technique does not interfere with visual observation or physical measurements of samples. For X-Ray Diffraction, Optical Microscopy, NMR, ESR, Micro tomes, and Infrared and Neu tron Diffraction, the FTS AirJet XR-85-1 is the instru ment of choice. Call or write for our new full-color bulle tin. Whatever your temper ature needs, FTS Systems, Inc. has the answer!
Train chemical technicians O n ti In CI
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THERMALPULSE
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• Improves Mw/Mn Repeatability by 30% to 50% • Low Flow Rates and High Accuracy Flow rates from 0.1 c c / m i n u t e t o 100 c c / m i n u t e ; 10:1 range w i t h each flow cell. Precision of better than 0 . 1 % . (β)
• No Moving Parts
· Corrosion Resistant
Thermal time of flight system has no moving parts or orifices. All wetted parts are glass or T e f l o n and can be used with almost any aqueous or o r g a n i c solvent.
MODERN CHEMICAL TECHNOLOGY is a unique, hands-on, practice-oriented program developed and newly updated by the American Chemical Society. It's a concise, seven-volume practical approach to chemistry for both students and on-thejob, degreed technicians and a valuable set of reference manuals as well. Students and technicians focus on a wide range of practical applications of theoretical concepts . . . cover sampling, analytical, and instrumentation techniques. Cost effective. Thorough. Unique. For free brochure, call collect 202/872-4588 or mail coupon below: American Chemical Society Division of Education 1155 Sixteenth St, N.W. Washington, D.C. 20036 Please send brochure on Modern Chemical Technology—No obligation, of course.
• Independent of Stream Composition O u t p u t is unaffected by changes in the process stream c o m p o s i t i o n , density, c o n d u c t i v i t y , t e m p e r a t u r e , etc.
• Output to Data AquisitionM o lSystems y t e k , Inc. · 2419 Smallman
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Title Organization . Address City, State, Zip . 56309-2004-E710
CIRCLE 225 ON READER SERVICE CARD 336 A ·
ANALYTICAL CHEMISTRY, VOL. 56, NO. 2, FEBRUARY
1984
