Laboratory Glassware
Briefs S e p a r a t i o n o f 1- a n d 2 - N a p h t h o l s a n d D e t e r m i n a t i o n o f T r a c e A m o u n t s of 2 - N a p h t h y l Methylcarbamate in Carbaryl Formulations by High Pressure Liquid Chromatography w i t h Confirmation by Spectrofluorometry
W a s h e r s . The Forma Fury System is the only system!
T r a c e a m o u n t s of a possible carcinogen a r e s e p a r a t e d a n d d e t e c t e d in foreign c a r b a r y l f o r m u l a t i o n s a t levels a s low a s 0.1%. R o b e r t J . A r g a u e r a n d J . David W a r t h e n , J r . , Agricultural En vironmental Quality Institute, Agricultural Research Service, U.S. Department of Agriculture, Beltsville, Md. 20705 Anal. Chem., 47, 2472 (1975)
Effect of Ammonia on the Spectrophotometric Determination of Atmospheric Concentrations of Sulfur Dioxide T h e results i n d i c a t e t h a t a q u e o u s a m m o n i a h a s n o effect on t h e analytical p r o c e d u r e a n d t h a t g a s - p h a s e a m m o n i a does n o t interfere t o a significant e x t e n t . K e n n e t h A. Rehme a n d F r a n k P . Scaringelli, U.S. Environ mental Protection Agency, National Environmental Research Cen ter, Quality Assurance and Environmental Monitoring Laboratory, Research Triangle Park, N.C. 27711 Anal. Chem., 47, 2474 (1975)
Graphical Procedure for Determination of Equilibrium Constants from Potentiometric Titration Curves T h e results of t i t r a t i o n s of p o t a s s i u m chloride w i t h silver n i t r a t e u n d e r various c o n d i t i o n s a r e t r e a t e d b y t h i s m e t h od, a n d t h e t h e r m o d y n a m i c solubility p r o d u c t s o b t a i n e d are c o m p a r e d w i t h t h o s e of a c o m p l e t e c o m p u t e r fit of t h e t i t r a t i o n curves, along w i t h previously r e p o r t e d values for these parameters. D. C. Moore and Geoffrey Davies, Polaroid Corporation, 1265 Main Street, W4, Waltham, Mass. 02154, and Chemistry Depart ment, Northeastern University, Boston, Mass. 02115 Anal. Chem., 47, 2477 (1975)
• 8 Standard models with fold-down or vertical lift door. · Stainless steel double wall construction, reduces noise, retains heat. · Built-in steam manifold or electric heat. · Dual rotary spray arms, top and bottom, driven by high pressure spray. • Built-in distilled water pump and reservoir. • Dual temperature thermostats for glass or plasticware. · Automatic liquid/powder detergent dispenser. · Fully programmable Select-A-Matic control panel. · Matching glassware dryer/hot air sterilizers. Learn more about total control over a fully automatic process. Send for your guide to the Forma Fury Glassware Washing System. The only System. And only from Forma.
Forma Scientific BOX &49 · MARIETTA, OHIO 45750 · AREA CODE 614/373-4763 TELEX 24-5394 · TOLL FREE 1N-WATS SERVICE Ω0Ο-848-9730 AREAS 1, :
CIRCLE 83 ON READER SERVICE CARD
FMI METERING PUMPS
Correspondence Characterization of Unresolved Components in High Pressure Liquid Chromatography R. G. Berg, C. Y. Ko, J . M. Clemons, a n d H. M. N c N a i r , Chem istry Department, Virginia Polytechnic Institute and State Uni versity, Blacksburg, Va. 24061 Anal. Chem., 47, 2480 (1975)
Aids For Analytical Chemists N o v e l Approach to Micro Infrared Sample Preparation D. H. Anderson a n d T. E. Wilson, Industrial Laboratory, East man Kodak Company, Rochester, N.Y. 14650 Anal. Chem., 47, 2482 (1975)
Evacuated Gas Sampling Valve for Quantitative Head Space Analysis of Volatile Organic Compounds in Water by Gas Chromatography William F. Cowen, W. J . Cooper, and J . W. Highfill, U.S. Army Medical Bioengineering Research and Development Laboratory, Fort Detrick, Md. 21701 Anal. Chem., 47, 2483 (1975) E l i m i n a t i o n of S o m e I n t e g r a t i o n E r r o r s in Pesticide Residue Analyses J . M. Zehner a n d R. A. Simonaitis, Stored-Product Insects Re search and Development Laboratory, Agricultural Research Sur vey, USDA, Savannah, Ga. 31403 Anal. Chem., 47, 2485 (1975)
THE ACCURATE W A Y TO HANDLE: • FRAGRANCES & ODORANTS M DYES, INKS & COLORANTS M CREAMS, OILS & WAXES M PRESERVATIVES & REPELLENTS M WETTING & DEFOAMING AGENTS The FMI LAB PUMP line of valveless piston metering pumps is available from stock with adjustable flow rates from 0 to 1000 ml/min at pressures to 100 psig.
FLUID
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48 SUMMIT ST., OYSTER BAY, N.Y. 11771 -|S'6] 9 2 2 - 6050
CIRCLE 82 ON READER SERVICE CARD ANALYTICAL CHEMISTRY, VOL. 47, NO. 14, DECEMBER 1975 ·
1243 A
