Briefs Identification of Chrysotile Asbestos by Microdiffraction
Br CATALOG OF CHROMATOGRAPHIC RESINS FOR HPLC AMIHO ACIDS · CARBOHYDRATES SUGARS · CORN SYRUPS · PEPTIDES Over 50 chromatographic controlled size resins for a wide variety of applica tions, including polymers for: GEL-PERMEATION CHROMATOGRAPHY HYORODYNAMIC CHROMATOGRAPHY 'AMIHO
ACID CALIBRATION STANDARDS
• BUFFERS FOR AMIHO ACID ANALYSES
Twenty years experience in the poly merization of highest quality chromato graphic resins with exceptional perfor mance and stability. Now at Low Competitive Prices · Guaranteed Prompt Delivery Phone or write lor free catalog:
BENSON COMPANY P.O. Box 12812 Reno, Nevada 89510 (702) 825-1493
oC
B E N S O N co.
CIRCLE 21 ON READER SERVICE
0
D. R Beaman* and H. M. Baker, Dow Chemical Company, Midland, Mich. 48640 Anal. Chem., 52 (1980) Recovery of Naphthalene during Evaporative Concentration
1984
Cecil E. Higgins* and Michael R. Guerin, Analytical Chemistry Division, Oak Ridge National Laboratory, Oak Ridge, Tenn. 37830 Anal. Chem., 52 (1980) Bonn-Type Field Ion Source for a Compact Magnetic Mass Analyzer 1987 Fumio Okuyama* and Kazuo Ishikawa, Department of Fine Measurements, Nagoya Institute of Technology, Gokiso-cho, Syowa-ku, Nagoya, J a p a n , and Minoru Chida and Yoshio Yamato, Research Institute for Scientific Measurements, Tohoku University, 19-1, Sanjyo-machi, Sendai, Japan Anal. Chem., 52 (1980) (Heptadecafluorodecyl)dimethylsilyl Bonded Phase for Reversed-Phase Liquid Chromatography 1990 Gert E. Berendsen, Krijn A. Pikaart, and Leo de Galan,* Laboratory for Analytical Chemistry, Delft University of Technology, Jaffalaan 9, P.O. Box 5029, 2600 GA Delft, T h e Netherlands, and Cees Olieman, Laboratory for Organic Chemistry, Delft University of Technology, Julianalaan 136, P.O. Box 5029, 2600 GA Delft, T h e Netherlands Anal. Chem., 52 (1980)
CARD
VERIFLO FLV 110 A PRECISION SAFETY VALVE FOR EMERGENCY SHUT-OFF OF HAZARDOUS TOXIC GASES, CAUSED BY EXCESS FLOW. FOR C Y L I N D E R A N D L I N E A P P L I C A T I O N S A new valve to safely shut off flow of hazardous toxic and flammable gases if system flow exceeds preset l i m i t s . W h e n gas f l o w exceeds preset limit the valve closes with a snap action, bubble tight. SPECIFICATIONS: Inlet pressure 200 to 3000 psi Flow limit from 100 to 50,000 scc/min Connections: Ά NPT in and out or Ά O.D. Tube Leakage rate less than 2x10-10 cc/sec helium MATERIALS: 316 Stainless steel, viton or kalrez and Kel-F
VERIFLO
1983
On-Column Cryogenic Trapping of Sorbed Organics for Determination by Capillary Gas Chromatography
1993 David Kalman,* Russell Dills, Cherill Perera, and Foppe DeWalle, Trace Organics Analysis Center, Department of Environmental Health, University of Washington, Seattle, Wash. 98195 Anal. Chem., 52 (1980) Dual Coulometric-Amperometric Cells for Increasing the Selectivity of Electrochemical Detection in HighPerformance Liquid Chromatography 1994 Gary W. Schieffer, Pharmaceutical Research Division, NorwichEaton Pharmaceuticals, Division of Morton-Norwich Products, Inc., Norwich, N.Y. 13815 Anal. Chem., 52 (1980) Chromite Method for Determination of Inorganic Peroxides in Alkaline Solution
1998
Richard W. Lynch and Maurice R. Smith,* Olin Corporation, P.O. Box 248, Charleston, Tenn. 37310 Anal. Chem., 52 (1980) Minimization of Nuclear Magnetic Resonance Spinning Sidebands by Spinning Rate Modulation 1999 Brad Bammel and Ronald F. Evilia,* Department of Chemistry, University of New Orleans, Lakefront, New Orleans, La. 70122 Anal. Chem., 52 (1980)
VERIFLO C O R P O R A T I O N INSTRUMENT DIVISION 250 Canal Blvd., Richmond, CA. 94804 (415) 235-9590
CIRCLE 2 2 2 ON READER SERVICE
CARD
1246 A · ANALYTICAL CHEMISTRY, VOL. 52, NO. 12, OCTOBER 1980
CIRCLE
170 ON READER SERVICE C A R D -