New Products
PROSTAGLANDINS Upjohn Diagnostics now offers you 9 prostaglandin compounds —for use as laboratory research chemicals. They are: • • • • •
PGE, PGE2 PGA, PGA2 PGF i a
• • • •
PGF2« Tromethamine 13,14-diH-15-ketoPGF2a Thromboxane B2 6-keto PGF i a
For more information, call or write:
Upjohn diagnostics Upjohn Diagnostics/Division of The Upjohn Company Kalamazoo, Michigan 49001/(616) 385-7111 To assure consistent quality, Upjohn prostaglandin chemicals are analyzed prior to release by our Quality Assurance Unit. For details about any batch analysis, contact Upjohn Diagnostics, Kalamazoo, Michigan. ' Copyright 1979, The Upjohn Company
UD 79-014
CIRCLE 210 ON READER SERVICE CARD
VISCOSITY
Automated Measuring Saves Lab Time. If you measure viscosity with the capillary method, there's a SCHOTT AVS System for you. If you don't, maybe you should. The fully automated AVS/PA will test up to 30 different samples without operator supervision. Select the program and let it go! Variable program capabilities include: number of rinses, number of repeat measurements, test temperature, sample temperature conditioning period, suction rates and more. Standard-temperatures up to 150°C; High Temperature-up to 220°C. Measuring accuracy 0.1 % with a range up to 500 c ST Semi-Automated models also available. Building block concept allows expansion from basic unit to fully automated unit.
SCHOTT AMERICA
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11 EAST 26TH STREET, NEW YORK, N.Y. 10010/(212) 679-8535 CIRCLE 187 ON READER SERVICE CARD 412 A ·
ANALYTICAL CHEMISTRY, VOL. 5 2 , NO. 3, MARCH
1980
spots, bars or intervals are fully resolved. There is precise head positioning, and the scan length is continuously adjustable from 2 to 18 cm. Kontes 433
Atomic Absorption Spectrometer SB900 Atomic Absorption Spectrophotometer features a two-lamp power supply, three-way burner adjustment and corrosion-resistant titanium burner assembly. The optical system utilizes the Ebert Mount Grating offering 90% efficiency with less than 5% light loss in the UV. Available accessories include a flameless carbon rod, four-lamp power supply, hydride generator, background correction, and microprocessor interface. G.B.C. 432
Computer/Controller MC341 Microjector is a microprocessor-based computer/controller that converts Perkin-Elmer Model 240 Elemental Analyzers to automatic operation. The retrofitted unit controls the timing cycle, reduces operator involvement, and computes and prints results. MC341-SAI provides single sample automation and handles five manually loaded samples per hour. MC341-HA provides 64-sample automation, and permits unattended overnight operation. Control Equipment Corp. 438
Isotachophoretic Analyzer IP-2A Isotachophoretic Analyzer is designed for ion-separation chromatographic analyses on electrolytic particles. The first stage of the electrophoretic tube uses high electric current to achieve high resolution and rapid separation, and the second-stage capillary detects each of the separated components. A potential gradient detector permits simultaneous qualitative analyses and quantitative determinations. Shimadzu 439
Zeeman AA Spectrometer Grun SM1 ZAA- (Zeeman Atomic Absorption)-Spectrometer detects trace amounts of heavy metals. The ZAA method completely eliminates background effects. Contaminants can be measured at the ppb level in solid, liquid or gaseous samples in less than a minute. Eighteen elements can now be detected with high sensitivity. Little or no sample preparation is necessary. A built-in microcomputer controls the procedure and the test sequence. Polytec Optronics, Inc. 440
