By using Trodat replacement ink pads, you can be sure that your stamps will consistently produce even and clean imprints. Both the pad material and the ink have been perfected over many years of research. That's why a Trodat imprint works just as well in the cold polar regions as it does in the tropical rainforest. All Trodat standard stamp inks are document-proof and thus guarantee that the imprints will last for decades. The inks used in the Trodat replacement pads do not dry out and are completely non-permanent.