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World's fastest polarographic analyzer. And we can prove it in 7 seconds flat. Seven seconds is all it takes for a precision analysis with the Bendix Polarotrace. I t brings to polarography all the advantages dual-beam optics brought to spectrophotometry. Through the use of twin-cell polar ography, 0 . 1 % precision is—for the first t i m e — r o u t i n e . A n d m a t r i x effects, due to reagent impurities and baseline defects, won't interfere with y o u r a n a l y s i s — b e c a u s e twin-cell operation cancels them out. Here is the most versatile polarograph m a d e : I t utilizes subtractive, comparative, first and second deriva tive modes of operation. Some typical results: Determination of 0.0002%
(2ppm) residual monomer in styrene polymer. Detection of 0.00001% (0.1 ppm) pesticides in fruits a n d vegeta bles. Detection of 0.5% of one steroid in t h e presence of 99.5% of another. Determination of explosives to less than 0.0001% (1 p p m ) . All with a precision of 0 . 1 % or better. With the flip of a switch, it will do s t r i p p i n g analysis t h a t h a s given detection limits of copper and lead to less than 5 ppb. And, of course, it can be used as a normal a n d deriva tive, single-cell instrument. Now combine t h a t speed and ver satility with 10~ 7 M sensitivity, and you'll know why Polarotraces are
finding such a wide range of applica tion. In the food industry, pharma ceutical analysis, determination of organic species, metallurgical analy sis and others. Ask for a demonstra tion on your application. Bendix scientific i n s t r u m e n t s — including mass spectrometers, atomic absorption and flame spectrophotom eters, polarimeters, polarographic systems a n d electron multipliers— are used in over 100 areas of research and analysis. For more information, write: The Bendix Corporation, Scientific Instruments Division, 3625 Hauck Road, Cincinnati, Ohio 45241. Or phone (513) 772-1600.
Bendix Circle No. 26 απ Readers' Service Card 20 A
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ANALYTICAL CHEMISTRY
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