A modified version of DuraPol UHT called DuraPol UHT-S has been used to protect stainless steel acid tank roofs. Other coatings claim to resist but gradually degrade, discolouring the acid red. DuraPol UHT-S will not, and so is ideal for tanks containing technical grade acid. We are currently working with a major sulphuric acid manufacturer to protect their tanks from acid corrosion. Previously fluoropolymer sheets were bonded to the roofs but these peeled away in a matter of months resulting in severe corrosion.