Automating Analytical Procedures An 8-p bulletin outlines modular instruments and accessories that can be used to automate sampling, measuring, reading, and reporting in many routine analytical procedures including spectrophotometry, titration, pH measurement, or automatic balance weighing. Arthur H. Thomas Co. 450
Versatile Instrument A 6-p folder describes the Model 216.5, a combination monochromator, spectrograph, and polychromator. Applications and operating modes of the instrument and its major features are covered. GCA/McPherson Instrument 451
Thermal Analysis A 34-p bibliography of differential scanning calorimetry and applications of the company's thermal analysis systems is compiled alphabetically by journal or book title and in chronological order under these headings. Perkin-Elmer 452
Pumps A 4-p brochure gives detailed descriptions of each of the company's peristaltic, syringe, and completely portable microflow pumps. Sage Instruments 453
Now, a low-cost means of serum hepatitis screening and forensic work The Shandon Electrophoresis Apparatus after Kohn is ideal for lipoprotein phenotyping and Australian antigen tests for hepatitis. It is also \ invaluable for forensic problems set \ up for crossed-over electrophoresis. Simple precipitin tests for establishing species origin of body fluids are done promptly and with very small volumes of sample—a vital point in forensic work. The versatile apparatus is actually suitable for six techniques: cellulose acetate; paper; starch, agar and polyacrylamide gels; microi m m u n o ; thin layer; and cooled platen work. For details, get Bulletin U77 from Shandon Southern Instruments, Inc., 515 Broad Street, Sewickley, Pa. 15143 (Pittsburgh District)
SHANDON P I T T S B U R G H
L O N D O N
F R A N K F U R T
CIRCLE 183 ON READER SERVICE CARD
Scientific Glassware TG-73 is a 176-p general catalog devoted to scientific glassware with sections on standards, micro, and environmental glassware. Also included is a complete line of chromatography syringes and accessories and items such as pH meters, electrodes, vinyl tubing, plasticware, and spectrophotometer cells. Tudor Scientific Glass Co. 454
Applications Clinical Methods A series of clinical methods data sheets gives details of enzyme, chemistry, and drug-testing procedures for the company's Models 24/25 sipper sampling spectrophotometers. A list of these methods is available. Beckman Instruments, Inc. 455
Chromium Determination A 5-p application note describes a method for sub-ppm determination of Cr(VT) by differential pulse polarography. Princeton Applied Research Corp. 456
Isocyanurate in Foams A 6-p folder describes a method for determining isocyanurate in urethane foams by a combination of thermogravimetry and derivative thermogravimetry. Fisher Scientific Co. 457
24 HOUR DELIVERY ON . . .
INFRA-RED OPTICAL CRYSTALS and CELLS FAST CELL RECONDITIONING SERVICE CUSTOM ROUTINE INFRARED ANALYTICAL SERVICE AVAILABLE
Consistently High Quality, Prompt delivery, low prices . . . these are the benefits realized by many of the largest American and Canadian Universities and Companies in the chemical and related industries who have already established International Crystal Laboratories as the prime source for sodium chloride, potassium bromide, calcium fluoride and barium fluoride. Follow the leaders to I.C.L Write for Catalogs and price 'ists on Crystals, Sealed liquid cells, Long path cells, and Cell reconditioning service.
INTERNATIONAL CRYSTAL LABORATORIES 122 Coit Street, Irvington, New Jersey 07111 Phone (201) 373-4242
CIRCLE 94 ON READER SERVICE CARD ANALYTICAL CHEMISTRY, VOL. 45, NO. 13, NOVEMBER 1973 · 1155 A
