MANUFACTURERS' LITERATURE
THIS PEAK REPRESENTS 18.29% 1, 3-BUTADIENE Chemist A took 14 min utes to compute 17.58% 1, 3-Butadiene by cut and weigh techniques Chemist Β took 7.5 min utes to compute 18.25% by triangulation Chemist C took 7 min utes to compute 18.19% by using a planimeter Chemist D took 3 min utes to compute 18.28% with a DISC Integrator Chemist Ε took 1 minute to compute 18.28% with a DISC Integrator equipped with a Disc Automatic Printer Now if you'd like to see how Messrs. D and Ε became so fast and so accurate — send for "Why Disc? ", a new publication comparing all peak area integration methods
DISC
Disc Instruments, Inc.
2701 S. Hatiaday St., saitta Ana, Calif. $2705 Phone: (714) 549-0343 · TWX 714-546-0434
Disc Instruments, Ltd. Ebberns Road, tfemel Hempstead Hertfordshire, England · phone: 57261-2
Circle No. 100 on Readers' Service Card
96 A • ANALYTICAL CHEMISTRY
Disc Instruments GmbH 8000 MéRchen 50, Oacriauerstr. 5 Π Germany · Tel: 54 22 91
Magnetic
Susceptibility
Systems.
Complete magnetic susceptibility sys tems for Gouy and Faraday measure ments are presented in an eight-page brochure. Alpha Scientific, Inc., 460 Roland Way, Oakland, Cailf. 94621 601 Pyrolyzer. Bulletin PY-2, four pages, describes and illustrates Model PY-2 pyrolyzer and the four chambers avail able for transmission condensate, ATR condensate, transmission vapor, and GC vapor methods of pyrolysis. Barnes Engineering Co., 30 Commerce Rd., Stamford, Conn. 06902 602 IR Spectrophotometer Supplies. Liq uid-, gas-, and solid-sampling supplies, variable temperature and ATR ac cessories, and beam condensers with related equipment are among the items included in Bulletin 83-A, 32 pages. Beckman Instruments, Inc., 2500 Har bor Blvd., Fullerton, Calif. 92634 6 0 3 Solution Conductivity Handbook. Bul letin 4090, 26 pages, describes principles of measurement, types of equipment, in stallation of a conductivity system, and typical applications. Charts, graphs, and diagrams are included. Beckman Instruments, Inc., 2500 Harbor Blvd., Fullerton, Calif. 92634 604 Disc Electrophoresis. The technique itself is discussed and new apparatus is presented in an eight-page booklet. Canal Industrial Corp., 5635 Fisher Lane, Rockville, Md. 20852 605 Spectrophotometer. Bulletin No. 606 presents Model AA-120 atomic absorp tion spectrophotometer. Cary Instru ments, 2724 S. Peck Rd., Monrovia, Calif. 91016 606 Magnetic Flowmeters. Technical Bul letin DS-7700 presents the Series 7700 solid state magnetic flowmeters with in tegral signal converters. Brooks In strument Division, Emerson Electric Co., Hatfield, Pa, 19440 607 Power Supplies. Regulated power sup plies, amplifiers, modules, and program ming devices are included in this 67page, 1969-1970 catalog. Kepco, Inc., 131-38 Sanford Ave., Flushing, Ν. Υ. 11352 608
