V O L U M E 22,
NO.
3, MARCH
19 A
1950
SARGENT POLAROGRAPH MODEL XXI Visible , Chart Recording Indispensable Chemical Facility Many Uses... Many Users I n 1937, e l e v e n P o l a r o g r a p h s w e r e k n o w n t o b e l o c a t e d in t h e U n i t e d S t a t e s . T o d a y t h e r e a r e m a n y h u n d r e d s of S a r g e n t P o l a r o g r a p h s i n u s e — e m p l o y e d for a w i d e v a r i e t y of p u r p o s e s . F r o m A u s t r a l i a t o S w e d e n , a n d all o v e r A m e r ica, S a r g e n t P o l a r o g r a p h s a r e c o n s t a n t l y a t w o r k for t h e p r o g r e s s of science. D o z e n s of u s e r s h a v e m o r e t h a n o n e S a r g e n t P o l a r o g r a p h w o r k i n g for t h e m . O n e i n d u s t r i a l firm a l o n e h a s a l r e a d y o b t a i n e d sixteen. Of t h e h u n d r e d u n i v e r s i t i e s , c o l l e g e s a n d research institutes employing Sargent Polarographs, one operates seven and over twenty univ e r s i t i e s u s e t w o or m o r e . T h e U n i t e d S t a t e s G o v e r n m e n t h a s a l r e a d y p l a c e d m o r e t h a n forty in service.
The Sargent Polarograph's uses are varied and many 1. For the routine analysis of non-ferrous alloys and ores when determining minor constituents including copper, lead, cadmium, zinc, manganese, iron and cobalt. 2. For the routine determination of lead, copper, nickel, manganese and cobalt in ferrous alloys. 3. For the analytical control of plating baths, notably in the field of precious metals.
4. For trace metal measurements in food products, in body fluids and in petroleum products. 5. For the analysis of source materials and processed products for a variety of hormones and vitamins. 6. For the identification and estimation of numerous substances of nutritional and biological regulatory function, supporting or replacing biological assay. 7. For the determination of halides and sulfate groups by titration with a polarized electrode. 8. For the analytical measurement of innumerable organic compounds containing reducible groups. 9. For specific industrial controls such as the estimation of aldehydes in alcoholic products, the quantitative differentiation of sugars and the control of aging quality in sugars. 10. For the measurement of dissolved oxygen, oxygen demand and metal ions in water and sewage. 11. For many uncommon analyses for which classical pro J cedures are unavailable, less accurate and slower. 12. For the investigation and control of commercial reduction processes. 13. For thermodynamic investigations relating to states of ionic aggregations, mobilities and diffusion rates, solubilities, reaction rates and equilibrium constants. for a complete description Model X X I , w r i t e today.
of the
Sargent
Polarograph
Request Bulletin AA9000
S-29303 POLAROGRAPH—Model X X I Visible Chart Recording, Sargent. For operation from 115 Volt 50/60 cycle circuits $1650.00
SARGENT SCIENTIFIC LABORATORY INSTRUMENTS · APPARATUS · CHEMICALS E. H. SARGENT & COMPANY, 4647 W. FOSTER AVE., CHICAGO 30, ILLINOIS MICHIGAN
DIVISION, 1959
SOUTHWESTERN
E A S T J E F F E R S O N STREET, D E T R O I T 7 ,
DIVISION,
5915
PEELER
STREET,
DALLAS
MICHIGAN 9,
TEXAS
