News I Fifth International Conference on Raman Spectroscopy. Sept. 2-8. U. of Freiburg, Freiburg, Germany. Contact: E. D. Schmid, Raman Conference, Institut fur Physikalische Chemie, Hebelstrasse 38, D-78 Freiburg I. BR., Germany I 27th Meeting of International Society of Electrochemistry. Sept. 6-11. Zurich, Switzerland. Contact: Landolt, Ecole Polytechnique Fédérale de Lausanne, Department des Matériaux, 34, Chemin de Bellerive, 1007 Lausanne, Switzerland I 3rd International Symposium on Analytical Pyrolysis. Sept. 7-9. Hotel CASA 400, Amsterdam, The Netherlands. Contact: Ria Priester, FOM-Institute for Atomic and Molecular Physics, Kruislaan 407, Amsterdam 1006, The Netherlands. Page 682 A, June 1975 l Micro 76. International Symposia & Exhibition. Sept. 13-17. Wembley Conference Centre, Wembley, London. Contact: Royal Microscopical Society, 37/38 St. Clements, Oxford 0X4 1AJ, England
l 1976 International Conference on M o d e m Trends in Activation Analysis. Sept. 13-17. Technical U. Munich, Munich, Germany. Contact: F. Lux, Institut fur Radiochemie der Technischen Uniuersitat Munchen, D-8046 Garching, F. R. Germany. Page 958 A, Sept. 1975 I Symposium on Recent Advances in Analytical Methods. Sept. 16. Maastricht, The Netherlands. Sponsored by International Union of Independent Laboratories. Contact: A. Herzka, Ashbourne House, Alberon Gardens, London, England I 7th International Conference on Magnetic Resonance in Biological Systems. Sept. 19-24. St. Jovite, Que., Canada. Contact: R. Dolan, National Research Council of Canada, Ottawa, Ont., Canada K1A 0R6 I 8th Materials Research Symposium: Methods and Standards for Environmental Measurement. Sept. 20-24. National Bureau of Standards, Gaithersburg, Md. Contact: J. R. McNesby, Office of Air and Water Measurements, NBS, Room A345, Chemistry Bldg.,
METERING PUMPS FOR SANITARY* SERVICE RECOMMENDED FOR ACCURATE AND DEPENDABLE HANDLING OF DISCRETE FLUID STREAMS IN SANITARY APPLICATIONS: FOOD, DAIRY, DRUG, PHARMACEUTICAL, MEDICAL, BIOLOGICAL, ETC.
• • • •
EASY TO CLEAN OR STERILIZE NO INTERNAL THREADS OR BLIND HOLES QUICK CHANGE SANITARY HEADS POSITIVE DISPLACEMENT ACCURACY. TYPICALLY BETTER THAN 1 %
• ADJUSTABLE FLOW —ZERO TO 100% OF RATED FLOW EVEN WHILE OPERATING • VALVELESS, NO POPPETS OR BALLS TO HANG UP OR STICK • PRESSURE RATING: VACUUM TO 100 PSIG PUMPING UPSTREAM OR DOWNSTREAM • FLUID TEMPERATURE RESISTANT TO 400"F.
CORROSION RESISTANT LIQUID END MATERIALS: INERT CERAMIC. TYPE 316 STAINLESS STEEL AND VIRGIN PTFE FLUOROCARB0N SELF PRIMING. UP TO 18' H r 0 DRY, 26' WET POWER: CHOICE OF 11 MOTOR TYPES TO MEET MOST REQUIREMENTS PLUS PEDESTAL MODELS TO ACCEPT YOUR POWER UNIT CONVENIENT: STANDARD TUBE CONNECTORS FOR USE WITH FLEXIBLE TUBING. ' V OR * V INSIDE DIAMETER. DEPENDING ON FLOW RATE VERSATILE: FLOW RATE RANGES FROM 0.1 TO 1000 ML PER MINUTE
'Conform» with Milk Ordinance end Code Recommended by the U. S. Public Health Servie
FLUID METERING, INC.
Washington, D.C. 20234. 301-9213775. Page 168 A, Feb. I 23rd Annual National Vacuum Symposium of the American Vacuum Society. Sept. 21-24. Palmer House Hotel, Chicago. Contact: J. L. Vossen, RCA Laboratories, Princeton, N.J. 08540. 609-4522700, Ext. 2717 I Conference on Microanalytical Techniques. Sept. 22-24. U. of Liverpool, England. Contact: Meetings Officer, The Institute of Physics, 47 Belgrave Square, London SW1X 8QX, England I 14th Conference on Vacuum Microbalance Techniques. Sept. 27-28. U. of Salford, England. Contact: A. W. Czanderna, Dept. of Physics, Clarkson College of Technology, Potsdam, N.Y. 13676. Page 1260 A, Dec. 1975 I ASTM Symposium on Quality Control: Sampling, Testing and Specifications. Sept. 29. Ottawa, Canada. Sponsor: American Society for Testing and Materials. Contact: G. D. Haines, St. Joe Minerals Corp., Main St., Nerculaneum, Mo. 63048. 314-369-5311. Page 42 A, Jan.
—for liquid chromatography
ω
Ε 2 ο EE .ο
I
rgjimî
ili]ili(«jiiil«a«j|
Fluorescamine-labeled compounds •
MUCH GREATER SENSITIVITY
• SPECIFICITY OF M E A S U R E M E N T • CHEMICAL STABILITY
More sensitive measurement than UV or visible absorption monitoring
More specific method of measurement because fewer c o m p o u n d s exhibit f l u o r e s c i n g property · Fluorophors resulting f r o m Fluorescamine are stable f o r several h o u r s • As little as 10 to 40 n a n o g r a m s of protein can be detected · Economically priced at $1375 · Call or write Gilson Medical Electronics, Inc. Box 27, M i d d l e t o n , Wl 53562. Phone 608/836-1551 · Telex: 26-5478
48 SUMMIT ST.. OYSTER BAY. NY. 11771 • (516) 922 6050
CIRCLE 76 ON READER SERVICE CARD 664 A · ANALYTICAL CHEMISTRY, VOL. 48, NO. 8, JULY 1976
CIRCLE 9 0 O N READER SERVICE CARD
