By using Trodat replacement pads, you can be sure that your stamps will continuously deliver even and clean impressions. Both the pad material and the ink have been perfected over years of research. That is why a Trodat stamp works just as well on the cold polar as it does in the tropical rainforest. All Trodat standard stamp inks are document-proof and thus guarantee that the impressions will last for decades! The inks used in Trodat replacement pads do not dry out and are completely non-toxic. red-blue. 4912.