Electoral marking stain is used as a security feature to prevent double voting in elections. Electoral marking stain typically contains a pigment for instant recognition and silver nitrate which stains the skin on exposure to ultraviolet light, leaving a mark that is impossible to wash off .Industry standard electoral inks contain 10%, 14% or 18% silver nitrate solution, depending on the length of time the marking Stain is required to be visible. Electoral marking stain is traditionally violet in colour, before the photosensitive element takes effect to leave a black or brown mark. We are one of the largest leading Electoral marking stain manufacturers and Electoral marking stain suppliers in India.

It is with this focused business outlook that we highlight here the RAYUDU LABORATORIES PVT. LTD., the brand of stationery. Our range of Indelible Ink, used in various indelible ink pens and indelible ink markers, Invisible UV Ink, is ingeniously created to serve meticulously on your business performance.the domain of manufacturing and exporting Ink and Ink Products. In addition, we also provide Industrial Chemical Products and Election Material. Our unique range comprises UV Invisible Ink, Ink Marker, Indelible Ink Bottles, Fingerprint Ink, Air Erasable Ink, Water Erasable Ink, Paint Remover, Fingerprint Pads, Thumbprint pads, Wire Draw Compound, Security Seal and Stamp Pads. Our products are appreciated for their reliability, leak proof ness, easy erasability and effectiveness.