||It is often necessary for the lithograph operator to intervene during printing or when the machine is at standstill in order to remove from strong scumming, blind spots, inking of non-image areas, and strong oxidation on presensitized plates. POLISH 90 resolve these problems in the best possible way. This plate cleaner is a highly active deoxidizing cleaner-detergent studies for the rapid removal of oxidation and inking of non-image areas from every analogical plates. The formula of POLISH 90 consists on a particular combination of hydrophile and lipophile components , when passed over the plate with a viscose sponge, remove the ink, eliminate the oxidations which cause inking of non-image areas and, at the same time, activate the printing areas, preparing them for easy and rapid inking. POLISH 90 restores ideal printing conditions.