ln Radiometer pH Meters... Carefully Matched and Tested Components Greater accuracy — proven reliability — consistently dependable results.
Ultra-Stable Amplifier Virtually drift-free long-term stability.
High Impedance Input Design Matches modern high impedance electrodes.
Advanced Circuit Design Dependable state-of-the-art components and integrated circuits.
Radiometer Precision Electrodes Over 100 different types, designed for diverse, routine and special applications.
It's t h e " G u t s " t h a t Count! Looking for superior performance in a pH meter? — Look inside a Radiometer. You'll see fine components, superbly assembled and thoroughly tested in their application. You will also see why stability, accuracy and dependability have been a traditional part of Radiometer pH meters and electrodes for almost 40 years. There's a digital or analog model to match your application — research or routine, inlab or on-site. Our new pH meter catalog is yours for the asking. Request it now and
you will also receive the Radiometer Electrode Catalog, listing over 100 e l e c t r o d e s for thousands of applications. Call your London Company Representative or c o n t a c t us today . . .
THE LONDON COMPANY 811 Sharon Drive · Cleveland, Ohio 44145 Telephone (216) 871-8900
Radiometer. . . Masters of pH measurement since 1937. CIRCLE 129 ON READER SERVICE CARD
ANALYTICAL CHEMISTRY, VOL. 48, NO. 12, OCTOBER 1976 · 955 A