CEC announces the 21-621 series modular mass spectrometer Over 50 different instrument configurations available. Choose from a variety of modules including analyzers, vacuum systems, inlet systems, cabinetry, plus many accessories. Build a complete analytical mass spectrometer for under $10,000—less if you have your own vacuum or inlet system or rack mounting. + Designed for the application needs of univer sity, industrial, and biomedical laboratories — routine analysis of gases and volatile liquids, isotope ratio measurements, breath and blood gas analysis, permeability studies, trace impurity determinations, air pollution studies, exhaust analysis, teaching tool, and more. PERFORMANCE: mass range to 400, resolution to 150, detection limit less than 1 ppm with CEC double-focusing cycloidal analyzer. Ask for Bulletin 21621X-1 See a 21-621 at the Pittsburgh Conference, Cleveland, Ohio · March 4 thru 8 · Booths 492-493
•^^Ϊ#1Μ
under ΊΟ,οοο
CEC/ANALYTICAL INSTRUMENTS 1500 S. SHAMROCK AVE., MONROVIA. CALIF. 91016
BELL & HOWELL * * * » , thr» MMtHM. H m t M M , L o · A * o » , NMdlum Height·, Paaadena, Philadelphia, Springfield, H. J. Circle No. 97 on Readers Service Card
See ACS Laboratory Guide for All Products/Sales Ottice VOL.
40, NO. 3, MARCH 1968
•
73
A
