For unexcelled expertise in t h e design and manufacture of
L A B F U R N I T U R E , DURALAB features: METAL CASEWORK and F U M E H O O D S • Superior materials and craftsmanship • Engineered for your Special requirements • Approved budget Exclusive use of nickel + lead-coated sheet steel with baked-on enamel finish to provide corrosion and acid resistance for the utmost in performance, durability and value. Custom detailing includes concealed hinges, doublepanel insulated doors and drawers with removable panels for easy cleaning and decontamination. Call us to discuss your requirements.
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• A w a r d e d t o a Duralab Laboratory by Research & Development for 1984 and 1986.
107-23 Farragut Rd., Brooklyn, NY 11236 Phone : 718-649-9600 FAX: 718-649-5033 - SINCE 1952 -
and C j SWEETS
CIRCLE 34 ON READER SERVICE CARD
Polystyrene Oligomers: LC/MS. normal phase gradient. Et mode yields intact molecular ions.
Drug Metabolites: LC/MS, reverse gradient. El mode yields detailed information.
so much information so wide a sample range so fast an answer for so little a cost ThermaBeam LC/MS EXTREL
In labs across the USA, the EXTREL LC/MS system with ThermaBeam interface is impressing even the toughest skeptics. Give us a call to discuss your toughest analysis or circle our reader service number for more information.
Manufacturers of Mass Spectrometer
Systems for More Than 20 Years
240 Alpha Drive · P.O. Box 11512 · Pittsburgh. PA 15238 (412) 963-7530 · Telex 812 316 EXTRALAB CIRCLE 43 ON READER SERVICE CARD ANALYTICAL CHEMISTRY, VOL. 60, NO. 21, NOVEMBER 1, 1988 · 1235 A