TNPSC Thervupettagam

Security Ink

March 5 , 2020 1624 days 835 0
  • The Council of Scientific and Industrial Research (CSIR) - National Physical Laboratory has developed a bi-luminescent security ink which glows in red and green colours when illuminated.
  • The ink developed could help to stop counterfeit rupee notes.
  • The formulation can be used to check the authenticity of passports, government documents, identity cards, etc. 

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