24A
VOLUME
19,
NO.
7
No Technical Training Required to Make
rtCCCVtOte
COORS U.S.A.
DETERMINATIONS
with α PHOTOVOLT CHEMICAL
Designed to measure
both
AND S C I E N T I F I C P O R C E L A I N
WARE
diffuse
reflection (whiteness, brightness, c o l o r ) a n d s p e c u l a r r e f l e c t i o n (shininess, gloss) • • • • •
W R I T Î FOR C O M P L i T * INFORMATION
Paper brightness tests Detergency tests Paint gloss tests, a n d m a n y others Line—or b a t t e r y — o p e r a t e d models T w e l v e interchangeable search units
For solid surfaces of every description, for powders, pastes and opaque liquids. To the basic instrument can be attached any of a number of search units, each engineered especially for one or more specific purposes. A variety of color fil ters is also available, including those for ICI Tristimulus values.
SCHAAR & COMPANY Complete Laboratory 7 4 8 W . LEXINGTON STREET
Equipment CHICAGO 7
COORS PORCELAIN COMPANY ^ Y
GOLDEN, COLORADO
L^A
GLASS A B S O R P T I O N CELLS OF FINE QUALITY
m de
°
^Kleti
Fused in an electric furnace with cement that is acid, alkali and solvent resistant.
Sole m a n u f a c t u r e r i n t h e U n i t e d S t a t e s of f u s e d E l e c t r o p h o r e s i s Ceils. Makers of complete Electrophoresis Apparatus
Optical Flat Walls. Many stock sizes are available. Special sizes made to order.
KLETT SCIENTIFIC PRODUCTS KLETT-SUMMERSON PHOTOELECTRIC COLORIMETERS · COLORIMETERS · NEPHELOMETERS · FLUORIMETERS · BIOCOLORIMETERS · COMPARATORS · ELECTROPHORESIS APPARATUS · GLASS STANDARDS · GLASS CELLS · KLETT REAGENTS
Klett
MANUFACTURING CO., 1 7 7 East 87th Street, N e w York, N . Y.
