With the Safescan 30 counterfeit detection pen, you will know within just 2 seconds whether the banknote you are examining is genuine or a counterfeit. Simply mark the note and observe: if the ink turns dark, it is likely counterfeit. Perfect for quick and mobile checks, such as at markets and events, or even in taxis and delivery vans. The iodine-based ink of the Safescan 30 reacts with the starch found in standard paper, but not with the official banknote paper made from cotton or plastic that is used by central banks worldwide. Additionally, this helps to remove counterfeit money from circulation: the colorless ink fades on genuine banknotes but leaves a permanent purple mark on suspected counterfeits. Direct authenticity verification. Ideal for on-the-go use. Suitable for testing all currencies. Dimensions: 13.5 x 1.5 x 1 cm. Weight: 9 g.