For Polymer Branching Information... Think Low Angle Laser Light Scattering
Chromatix® Low Angle Laser Light Scattering (LALLS) detectors and software give unique polymer branching data when coupled with Gel Permeation Chromatography (GPC). RESULTS: NBS Polymer Standard SRM-1476 is known t o contain branched material. The LALLS detector clearly indicates a high molecular weight fraction that is below the detection limit of the Differential Refractive Index (DRI) detector. CONCLUSIONS: The CMX-100 LALLS detector is inherently sensitive to high M"w polymers and can yield unique results complementary to conventional GPC concentration detectors such as a differential refractive index unit (DRI). Only with LALLS can the polymer analyst realize the full potential of GPC for branched materials.
LALLS SOLVES PROBLEMS: It can easily detect the presence of that smalt concentration of high fHw polymer that would otherwise escape detection by using only a concentration detector. These unseen small concentrations of very high H w branched polymers can dramatically alter the performance and processing characteristics of the material in many different applications. The production or end-use suitability of your polymer may be assured when LALLS data is used for routine quality control. FAST AND EASY TO USE: The CMX-100 system is designed with unique features that save time and money: • No GPC calibrations needed • Absolute M w for branched and linear polymers • No lengthy and difficult post run calculations required LDC/Milton Roy proprietary software dramatically extends the data generated by the CMX-100. It provides complete data formatting and many special calculation routines. A l l are available through easy-to-use-and-understand "menu"-driven prompting, specifically designed for the polymer chemist. AFFORDABLE: The CMX-100 is designed t o provide routine L A L L S information to the polymer analyst at a surprisingly affordable price. The CMX-100 interfaces easily and quickly to your present GPC system and can operate at temperatures up to 150°C. It can be used with equal ease for aqueous and nonaqueous polymers. COMPLETE SERVICE AND SUPPORT: Field service is now available through the extensive LDC/Milton Roy network. We maintain a complete applications laboratory to support your needs in GPC/LALLS. Call or write for additional information and the name of the nearest LDC/Milton Roy Sales/Service Representative.
LCD/Milton Roy
Chromatix® Product Manager Toll Free 800-538-1595 or (408) 736-0300 (U.S.A. only)
U.S. HEADQUARTERS, P.O. Box 10235, Riviera Beach, Fi_ 33404 Toll-free: 800-327-6182. in Florida: 1305) 844-8241 International Telex: 441098, Domestic Telex: 513479 SUNNYVALE OPERATION, 560 Oakmead Parkway, Sunnyvale, CA 94086 Toll-free: 800-538-1595, in California: (408) 7364300 UNITED KINGDOM, LOC UK. Milton Roy House,52 High Street, Stone, Staffordshire ST16 8AR England Phone: 785-81-3542 Telex: 36623 WEST GE RM AN Y, Milton Roy (Deutschlandl GMBH Jahnstresse 22-24 6467 Hasselroth 2, West Germany Phone: 6055-2031 13366) Telex: 4184357 JAPAN, Mil*on Roy K.K., Takanavya Dai-lchi Building 21-41, Takanawa 2-Chorne. Minato-Ku, Tokyo 108, Japan Phone: (03) 473-3181 Telex: 242-4296
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ANALYTICAL CHEMISTRY, VOL. 55, NO. 11, SEPTEMBER 1983 ·
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