5%-25% Silver nitrate ink,indelible ink for stamp or election pen 1.10% indelible inkdifferent colours of Indelible ink for election voting (with 5-25% of silver nitrate). Indelible ink is used for election voting. 2. The content of silver nitrate is 5-25%.The ink can maimtain on the skin of finger above 72 hours, and also can not be washed off by water, enchoal and bleach.we can offer different colours, such as purple, blue, green, red and so on.we offer indelible inkbottles ,bottle with brush, and indelible ink marker. 3. Our quality management strictly obey the rule of ISO 9001, 2000 Version. 4. different colours of Indelible ink for election voting(with 5-25% of silver nitrate). Indelible ink is used for election voting. We provides sophisticated inks with full range of printer models for the digital printing. Our ink has been purified 3 times. Having being in the line for 9 years, our company is a professional ink manufacturer exporting many kinds of ink, CISS and ink cartridge.