All Trodat self-inking rubber stamps have an integral stamp pad that can be easily replaced when your stamp is no longer creating a crisp impression. Once your imprint starts to lose its sharpness, simply swap with a Trodat replacement ink pad to make your stamp as good as new. Trodat replacement pads are available in the standard colours of black, blue, red, green, violet and for daters/numberers in blue/red. Other colours are available to special order from the multi-color spectrum range in our specialised MCI system. The ink in the cartridges is manufactured with a water base, and does not contain any toxic substances, acid, formaldehyde, or heavy metals. The ink in Trodat cartridges is hygroscopic: it regulates itself by absorbing moisture from the air, therefore it does not dry, and allows prolonged usage over extended periods of time. Select your replacement ink cartridge in the following sections by model type. If you are unsure of your stamp model, check the model printed on the stamp or remove the ink cartridge and check the model.reference number embossed onto the ink cartridge.