In 1981, Analytical & Pathological laboratories in India were depending on irregular sources of imported laboratory chemicals like Stains, pH Indicators & Reagents which were available in small packings for testing.

Halochromic materials change their color in response to change in acidity or basicity.The scope of application of smart material includes solving engineering problems with unattainable efficiency and provides an opportunity for creation of new products that generate revenue.

Worldwide considerable effort is being deployed to develop smart materials. The technological benefits of such systems have begun to be identified and demonstrators are under execution for wide range of applications from space to aerospace, to civil engineering and domestic products. The technologies using smart materials are useful for both new and existing constructions. Of the many emerging technologies available, the few described here need further research to evolve the design guidelines of systems.

**This information is for illustration only; It has been developed under strict laboratory conditions. The user should test and verify that the ink works for their particular application. the ink is application and technique sensitive so it must be tried on the actual use. Applications are only limited by the imagination and include advertising and promotional applications.**