BELL & HOWELL
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CEC announces the next generation of mass spectrometers. The Single Focusing 21-490 1 4-inch, 90° sector • Mass range, 12-1000 • Resolution, 600 or 1100 (10% valley) ι Scan speeds to 1 sec/decade ι Includes total ionization, electron multiplier, batch inlet, direct probe ι Readily convertible to 21-491 The Double Focusing 21-491 Same features as the 21-490 plus: Electric sector • Resolution to 2500 (10% valley) • Differential pumping Why the next generation? Computer-aided design of the analyzers provides significantly higher performance at a significantly lower price than any other commercial mass spectrometer. Both instru- ments are available with gas chromatograph and interface, as well as a full line of accessories. Either instrument occupies 11 square feet of laboratory space. Prices start under $20,000. For complete information call your nearest CEC Field Office or write Consolidated Electrodynamics, Pasadena, Calif. 91109. A subsidiary of Bell & Howell. Ask for Bulletin Kit 1738-X6. Circle No. 12 on Readers' Service Card 4 0 A · ANALYTICAL CHEMISTRY CEC/ANALYTICAL INSTRUMENTS BELL&HOWELL Offices in Arlington, Va., Atlanta, Cleveland, Dallas, Denver, Des Plaines, Houston, Los Altos, Needham Heights, Pasadena, Philadelphia, Springfield, N. J. See ACS Laboratory Guide for All Products/Sales Office
Transcript of BELL & HOWELL
CEC announces the next generation of mass spectrometers.
The Single Focusing 21-490 1 4-inch, 90° sector
• Mass range, 12-1000
• Resolut ion, 600 or 1100 (10% val ley)
ι Scan speeds to 1 sec /decade
ι Includes to ta l ionizat ion, e lec t ron mul t ip l ie r , batch in let , d i rec t probe
ι Readily conver t ib le to 21-491
The Double Focusing 21-491 Same features as the 21-490 p lus:
Electr ic sector
• Resolut ion to 2500 (10% val ley)
• Di f ferent ia l pumping
Why the next generation? Computer-a ided design of the analyzers prov ides s igni f icant ly higher per formance at a s ign i f icant ly lower pr ice than any other commerc ia l mass spect rometer . Both inst ruments are avai lable w i t h gas chromatograph and in ter face, as w e l l as a fu l l l ine of accessor ies. Either ins t rument occupies 11 square fee t of laboratory space. Prices start under $20,000. For comple te in format ion call your nearest CEC Field Off ice or w r i t e Consol idated Electrodynamics, Pasadena, Cali f . 91109. A subsid iary of Bell & Howe l l . Ask for Bul let in Ki t 1738-X6.
Circle No. 12 on Readers' Service Card 4 0 A · ANALYTICAL CHEMISTRY
CEC/ANALYTICAL INSTRUMENTS
BELL & HOWELL Offices in Arlington, Va., Atlanta, Cleveland, Dallas, Denver, Des Plaines, Houston, Los Altos, Needham Heights, Pasadena, Philadelphia, Springfield, N. J.
See ACS Laboratory Guide for All Products/Sales Office
