ENVIRONMENTAL SCIENCE & TECHNOLOGY®
ES&T
THE ONLY TRUE MOLECULAR WEIGHT ANALYZER FOR GPC. ABSOLUTELY. The LALLS Spectrophotometer From
MILTON ROY Ψ LDC DIVISION
The p r e m i e r e research publication in the environmental field. Environmental science continues to be one of the fastest growing fields. And ES&T has grown right along with it! ES&T continues to give you the practical, hard facts you need on this science . . . covering research, techniques, feasibility, products and services. Essential reading for environmental scientists both in the business and academic world . . . ES&T has increased its emphasis on peerreviewed research dealing with water, air, and waste chemistry in addition to adding critical reviews of important environmental science issues—all relevant to understanding the management of our natural environment. Also included are discussions on environmental analyses, governmental regulations, current environmental lab activities, and much more! For rate information, and to subscribe, call toll free:
(800) 424-6747
size exclusion chromatography employs the proven principal of low angle laser light scattering to determine absolute molecular weights of effluents from a GPC. While other methods may provide inferential MW values only LALLS produces a direct and reproducible value for samples like thermoplastics, epoxy resins and biologicals. But you don't need take our word for it, Milton Roy will perform a trial analysis on your material before you buy. > MILTON ROY'S EXPANDED SERVICE NETWORK Now Milton Roy instrument service is available in most major cities. To get the benefits of absolute MW values in your GPC studies, just call or write: P.O. BOX 10235, RIVIERA BEACH, FL 33419 TEL: 800-LDC-HPLC · in FL (305) 844-5241
800-654-9955
CIRCLE 98 ON READER SERVICE CARD
ANALYTICAL CHEMISTRY, VOL. 59, NO. 18, SEPTEMBER 15, 1987 · 1097 A
