Pretty colors not welcome! NDUSTRY makes many products that must be crystal-clear— I without a trace of color or contaminants. A g o o d example is the liquid sugar being poured above. Processors have found that the most efficient and economical way to remove unwanted color from most liquids is to circulate tliem through a bed of Pittsburgh granular activated carbon—small coal-derived particles that look like tiny, hard black sponges. They're so porous that a single pound contains 125 acres of adsorbent surface! These amazing granules were developed by Pittsburgh Coke & Chemical. In addition to color removal, they're widely used today for pharmaceutical purification, solvent recovery, air and water purification and dozens of other vital adsorption processes. They're another outstanding example o f Pittsburgh Coke's unique ability t o create better, more useful products from coal . . . and t o guard their quality and purity through every step of production, from coal to finished product.
WSW 6 5 7 0 COAL
CHEMICALS
•
PROTECTIVE
COATINGS
•
PLASTICIZERS
•
ACTIVATED
CARBON
•
COKE
•
CEMENT
DEC.
2, 1 9 57
•
PIG IRON
C&EN
95
