. . . means longer useful life for all acid-wet equipment . . . fewer breakdowns . . . lower maintenance.
LEWIS PUMPS deliver Sulfuric Acid d e p e n d a b l y and safely at the temperature you choose to operate . . . w i t h o u t d r i p , splash, spray or leak! FOR M A X I M U M
SAFETY H A N D L I N G
SULFURIC
ACID
CHAS. S. LEWIS & CO., INC. 8625 Grant Road · St. Louis 23, Mo. 35
Serving The Process Industries Since 1915 Circle No. 217 on Readers' Service Card
14 A
INDUSTRIAL AND ENGINEERING CHEMISTRY