MANUFACTURERS' LITERATURE
Multipurpose Electronic Console MP-1666 is a versatile measuring and control system. Only those plug-in units likely to be used in any particular lab need be purchased; these are inserted in console and patched into various configurations as desired. Plug-ins include amplifiers, electrometers, reference voltage sources, counter, oscillator, etc. It is easy to set up standard or unconventional instruments. Power supplies for internal and external use. $1960.
McKEE-PEDERSEN INSTRUMENTS BOX 322 DANVILLE, CALIF. 94526 Circle No. 124 on Readers' Service Card
Illustrated MPI Lab Manuals Please send me the following MPSystem laboratory manuals: Π MPI Applications Notes Vol 1 $1 Π MPI Applications Notes Vol 2 $1 Π MPI Applications Notes Vol 3 $1 Π MPI Applications Notes Vol 4 $1 Π All four volumes of Notes $3 I | MPI Operations and Applications Manual $2 • New Laboratory Textbook by Dr. L. P. Morgenthaler $3.50 Name Street City State Zip.
McKEE-PEDERSEN INSTRUMENTS BOX 322 DANVILLE, CALIF. 94526 See us at the Pittsburgh Conference, Booth 320. Circle No. 124 on Readers' Service Card
M S Hollow Cathode Discharge De vices. A 28-page brochure provides specifications for over 250 single-ele ment and multielement hollow cathode discharge devices for use in atomic ab sorption spectroscopy. Also included is a list of accessories. Westinghouse Electric Corp., Electronic Tube Div., P. 0 . Box 284, Elmira, Ν. Υ. 14902 601 Transistor-Transistor Logic. A 112page color brochure contains specifica tions for more than 150 circuit func tions; the broadest TTL family in the industry. Design information about logic, memory, and interface circuits in standard, low power, and high speed ranges is included. Fairchild Semicon ductor, Box 880A, Mountain View, Calif. 94040 602 Baths and Circulators. Bulletin BR 215, 42 pages, gives details and photo graphs plus data on Lauda constant temperature baths and circulators. Prices are included. Brinkmann In struments, Inc., Cantiague Rd., Westbury, Ν. Υ. 11590 603 Automatic Cycle Gas Chromatographs. Eight pages describe and picture the 2420 Series of automatic cycle go's. Specifications and accessories are also included. Infotronics Instrument Corp., 7800 Westglen Dr., Houston, Tex. 77042 604 Spectrometers. A 6-page minicatalog covers the company's full line of spec trographs instruments for the vacuum uv, vis, and ir portions of the spectrum. Three new research tools are also de scribed: the ESCA 2.5 electron impact spectrometer, the ESCA 36 photoelectron spectrometer, and the RS-10 high resolution, double beam ratio recording spectrophotometer. McPherson Instru ment Corp., 530 Main St., Acton, Mass. 01720 605 Aa/Flame Emission Spectrometer. Bulletin 28D covers the Atomsorb ; fea tures include direct concentration read out, sample-saving time constant, built-in lamp warm-up, flame emission as well as a a capability, and built-in scale expansion (up to 20X). Fisher Scientific Co., .1308 Fisher Bldg., Pitts burgh, Pa. 15219 606
best Day in and day out, the reliability, long life and versatility of Tygon flexible plastic Tubing proves over and over that it's your best laboratory tubing investment.
TYGON* TUBING Crystal-clear Flexible Chemically inert Non-oxidizing 74 standard sizes At laboratory supply houses every where, or write Norton Plastics and S y n t h e t i c s D i v i s i o n , A k r o n , Ohio 44309.
NORTON
PLASTICS & SYNTHETICS DIV. fomEmrus. STOMMM/NC. ΑΚβΟΛΙ. OH/O 44309 Circle No. 132 on Readers' Service Card
ANALYTICAL CHEMISTRY, VOL. 43, NO. 2, FEBRUARY 1971
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