pH1 Liquid Storage Tanks Exporter Center Enamel: GFS Tanks for Extreme Acid Service pH 1 is near battery-acid strength - among the most aggressive liquid-service conditions a storage tank can face. Almost no common tank survives it: unprotected steel dissolves in hours, and standard enamel formulations are not rated for it. Only a specially formulated, thick, multi-fired glass lining combined with acid-compatible seals can hold pH 1 without rapid failure. Specifying the wrong