And the QUAD 300 quadrupole mass spectrometer now scans and resolves to mass 800. This, and its simplicity, added to inherently higher quadrupole sensitivity, speed and versatility makes the QUAD 300 the best instrument of its type available today . . . and at a moderate price. • QUAD'S better than 10'° gm/sec sensitivity, 100 millisecond scan speed and linear mass display make it especially suitable for on-line gas chromatograph effluent analysis. ; The unique combination of the EAI multiple inlet, differentially pumped ionizer, and advanced quadrupole fTiter/detector establish the QUAD 300 as the leader in mass analysis instrumentation. • This EAI combination produces an instrument with unsurpassed contamination resistance, versatility, ruggedness and mobility. π Samples can be introduced into the system through a solid sample probe, a gas chromatograph or a choice of batch inlets. A Variety of scan and output modes complete the instrument to make the QUAD 300 a necessity in every laboratory. FEATURES Economical, Sensitive, High scan speed, Convenient, Optional digital mass meter, Log/linear display, Built-in heater for ionizer clean-up, Contamination resistant, Computer compatible and programmable. ACCESSORIES Total ion current monitor, Continuous peak monitor programmer, Special inlet and inlet pumping systems, Extra solid sample probes. ELECTRONIC ASSOCIATES, INC. Scientific Instruments 4151 Middlefield Road · Palo Alto · California 94303 Telephone (415) 321-7801
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QUAD 300 SPECIFICATIONS Mass Range
1-800 amu
Sensitivity
< Ι Ο - ' 0 gm/sec in GC effluent
Resolution*
Μ/ΛΜ>2Μ to > 5 0 0 amu
Operating Temperature
250"C (bakeout to 400°C)
' Vacuum System
Utilities
5 X 1 0 " torr base pressure; 285 liter/ sec oil diffusion pump system 115V, 60Hz; Water: 0.1 gal/min
*AM = Peak width at one-half peak height.
EAI
®
EVEN YOUR SECRETARY CAN GET A GOOD, CLEAN SPECTRUM LIKE THIS WITH THE QUAD™ 300:
QUAD 300 spectrum of tripalmitin. Scan from mass 100 to mass 800, solid sample probe i n l e t , 70 V electron energy, 1 ma emission.
Circle No. 167 on Readers' Service Card 56 A
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ANALYTICAL
CHEMISTRY
