POLAROGRAPHIC

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RECORDING

POLAROGRAPHIC ANALYZER iq

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[ 7 ] Normal D. C. Polarography [ 3 Controlled (Rapid) D. C. Polarography Stripping Analysis Polarography 0A.C

The Polarecord E 261-R is t h e only i n s t r u m e n t currently available which can be applied to the various polarographic m e t h o d s now developed because it provides t h e chart-speeds, voltage scan speeds, mechanical systems, and c o m p e n s a t i o n facilities necessary for effective use of these procedures. The e q u i p m e n t illust r a t e d is all t h a t is required for N o r m a l , Rapid or Stripping Analysis Polarography—and permits the d e t e r m i n a t i o n of con-

. Polarography

centrations t o 10- 9 Molar. For A. C. Polarography, an auxiliary power supply is offered. Recently, new analytical procedures based on the use of our exclusive controlled ( r a p i d ) forced d r o p p i n g m e r c u r y electrode have been developed by m a j o r U.S. chemical laboratories using t h e Polarecord. For c o m p l e t e current technical i n f o r m a t i o n and descriptive literature, please contact:

METROHM

BRINKMANN

INSTRUMENTS, INC.

115 Cutter Mill Road, Great Neck, N.Y. PHILADELPHIA - CLEVELAND

HOUSrON

MIAMI

MENLO PARK CAL

ST LOUIS

Circle No. 176 on Readers' Service Card

VOL. 35, NO. 6, MAY 1 963

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