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Features of Exide Mipor Separators Insulate plates from each other permanently. Prevent passage of particles of active material between plates. Immune to battery heat. Perfectly uniform in all dimensions. Longer life. Outstanding economy. Reduced maintenance. Freedom from trouble and service interruptions. A permanent separator that will last the life of the battery. IN STORAGE BATTERIES 7 | WHAT IT IS Exide Mipor consists of vulcanized rubber, permeated by microscopic pores so numerous as to permit free diffusion of the electrolyte, yet so minute as to be a barrier to the smallest particles of active material. Because it is vulcanized with heat during manufacture, Exide Mipor is immune to the heat encountered in the battery. It does not crack, crumble or break down under severe operating conditions. WHAT THIS MEANS TO EXIDE-IRONCLAD USERS The advantages that Exide Mipor offers to users of these batteries are unique. Longer life, reduced maintenance, greater economy —these are available in fuller measure than ever before to Exide-Ironclad users. The development of Exide Mipor and its use in Exide-Ironclad Batteries means a good battery made still better. The use of the Exide Mipor separator increases tremendously the value of Exide-Ironclad Batteries in service— for they include this great improvement at no increase in price. This means still lower battery operating costs. Write for copy of new booklet giving : . . ery plate insulator. full details on Exide Mipor, the permanent storage battery p Electric Industrial Trucks THE ELECTRIC STORAGE BATTERY CO., Philadelphia The World's Largest Manufacturers of Storage Batteries for Every Purpose Marine Service Exide Batteries of Canada, Limited, Toronto Exide IRONCLAD BATTERIES WITH EXIDE MIPOR separators MARINE REVIEW—-September, 1934 5