Manufacturers' Literature Gas Chromatograph A 30-page brochure provides detailed information on performance data, sample systems, oven performance, major accessories, analytical performance, and data from five different detector systems for the Model 910 series gas chromatographs. PerkinElmer Corp. 430
Air and Water Pollution Bulletin 51, a bibliography of applications of infrared spectroscopy to air and water pollution, lists 80 references. Perkin-Elmer Corp. 431
Gas Chromatograph The 400 series gas chromatographs are featured in a new 4-page brochure. Antek Instruments, Inc. 432
Mass Spectrometer Data System
Pesticide Standards
H P 5933A dual-disc mass spectrometer data system is described in a 20-p brochure detailing system hardware configurations, operating features, available software programs, and ordering information. Hewlett-Packard Co. 435
A list is available of over 170 of the more common pesticide standards, organized to give common name, synonym, active ingredient, and percent composition. Analabs Inc. 434
NMR Technique for Determining Composition of Fats and Oils
The Model AR-2 recording vacuum balance is described in a 6-p brochure detailing the balance's stability, features, accessories, and some pertinent application information. PerkinElmer 443
" 1 3 C NMR as a Quantitative Analytical Method for Determining the Composition of Fats and Oils" describes the application of 13C NMR to a triglyceride. Varian Instrument Division 436
Gas Chromatographic Detection of Vinyl Chloride Monomers Application note ANGC 1-75, 4 p, describes how a gas chromatograph system can be configured for vinyl chloride to help manufacturers stay within safe limits. Hewlett-Packard 437
Infrared Spectroscopy
Fluorescence Spectrophotometry
Infrared Shopper, Spring 1975, 4 p, examines new developments in sample handling for infrared spectroscopy. Wilks Scientific Corp. 433
A bibliography of 50 articles relating to various applications of fluorescence spectrophotometry is available. Perkin-Elmer 438
Viscosity measured
Recording Vacuum Balance
Amino Acid Detection Application note 176-16, 4 p, gives details of an analysis of derivatized amino acids by chemical ionization gas chromatography/mass spectrometry. Hewlett-Packard 444
Environmental Standards More than 40 standard reference materials useful for environmental research and control, available from the National Bureau of Standards, are described in a new NBS pamphlet. Office of Standard Reference Materials, Room B311, Chemistry Building, National Bureau of Standards, Washington, D.C. 20234
MINIPULS PERISTALTIC P U M P S miniature pumps with superior performance
the easy way! A typical reading from the dial of a Brookfield Viscometer takes only 30 seconds . . . factor for range and you have an accurate reproducible viscosity measurement directly in centipoise units. There's no guesswork, no timing, no involved calculations. It's the easiest way there is. Multi-speed models cover a total range of 1 to 64,000,000 cps for Newtonian and nonNewtonian fluids. Literature available.
• Continuous flow adjustment 1-1300 ml/hr. • Digital speed control • Tubing can be replaced while motor is running • Very low pulsation Available in 1-, 4-, 8- and 16-channel models
EXCLUSIVELY CONCERNED WITH
CALL OR WRITE
BROOKFIELD VISCOSITY
MEASUREMENT
AND CONTROL FOR
Gilson Medical Electronics, Inc.
P.O. BOX 27. MIDDLETON, WIS. 53562
·
PHONE 608/836-1551
OVER 4 0 YEARS.
BROOKFIELD ENGINEERING LABORATORIES INC., Dept. F4 STOUGHTON, MASS
02072
617/3444310
CIRCLE 2 6 O N READER SERVICE CARD
792 A
ANALYTICAL CHEMISTRY, VOL. 47, NO. 8, JULY 1975
CIRCLE 9 2 O N READER SERVICE CARD
