Rapid, Quantitative separation of metals by DYNA-CATH mercury cathode Advanced design makes mercury cathode a practical analytical tool. Dyna-Cath does a fast, complete, job in separation of metals. A novel magnetic circuit causes the electro lyte and mercury to move in opposite direc tions, providing counter-current stirring. The ferromagnetic metals formed at t h e interface are drawn beneath t h e mercury surface, providing a continuously clean sur face and preventing re-solution of deposited metals. Ask for Bulletin 220-D. In determination of a l u m i n u m in steel—removes .5 g m of iron quantitatively in 10 m i n u t e s
Eberbach CORPORATION P. O. Box 1024
Ann Arbor, Michigan
Circle No. 11 on Readers' Service Card
NOW!
TWO MODELS
For research and routine procedures the most precise instrument for all fluorometric methods of analysis is now available in two models: with transformer for line operation or battery power supply. Either model provides precise, reliable measure ments over a wide range of sensitivities. Ideal for extremely low concentrations in micro or macro volumes.
Line operated Photo-Electric
FLUOROMETER Technical data available
on request
Specify Bulletin No. 803AC
FARRAND OPTICAL CO., INC. STREET
BRONX B L V D . A N D EAST 2 3 8 t h
NEW YORK 7 0 , Ν. Υ.
Engineering, Research. Development. Design and Manufacture of Precision Optics. Electronic and Scientific Instrume Circle No. 43 on Readers' Service Card VOL. 3 2 , N O . 4 , APRIL 1 9 6 0
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