YOU GET
^ZflULIUJB IN
YOU GET EXTRA VALUE IN
U^UJU-BITW
Mallinckrodt's careful selection of raw materials, utmost care in manufacturing processes, and detailed analytical tests assure outstanding purity of all Mallinckrodt AR's.
Compare, for example, CALCIUM
CHLORIDE
ANHYDROUS
AR
This is another of the many Mallinckrodt analytical reagents controlled for purity within American Chemical Society toler-
YOU GET EXTRA VALUE IN
S E M W I C E l
Eighty-five responsible AR dealers in fifty-nine cities employ over 500 trained specialists. These dealers carry ample stocks of Mallinckrodt AR's and are always ready for prompt and efficient service.
ances. Five mesh sizes are available to satisfy your analytical needs—4, 8, 12, 20 and 40 mesh. The large exposed surface area of the particles affords maximum efficiency in moisture absorption. This makes Mallinckrodt Calcium Chloride Anhydrous AR an excel-
YOU GET EXTRA VALUE IN
ï*5^€^I€i^€j«MIWC5
Most Mallinckrodt AR's are packaged in space-saving STORMOR bottles.
lent drying agent and moisture absorbent, in addition to its other analytical applications. When you order Calcium Chloride for your laboratory, specify Mallinckrodt.
REMEMBER TO SPECIFY A N D INSIST
UPON
Y&C Cota ~Uœft~ MALLINCKRODT
CHEMICAL
WORKS
SECOND AND MALLINCKRODT STREETS, ST. LOUIS 7, MO. 72 GOLD ST., NEW YORK 8, Ν. Υ. · CHICAGO · CINCINNATI · CLEVELAND LOS ANGELES · PHILADELPHIA · SAN FRANCISCO · MONTREAL · TORONTO
For further information, circle numbers 63 A-1, 63 A-2 on Readers' Service Carl, gage 61 A
