Development of thermochromic strips as a water pasteurization indicator

Article type: Research Article

Authors: Qazi, Ishtiaq A. | Awan, M. Ali | Baig, M. Anwar

Affiliations: Pakistan Council of Renewable Energy Technologies (PCRET), Islamabad, Pakistan | Institute of Environmental Science and Engineering (IESE), National University of Sciences & Technology (NUST), Rawalpindi, Pakistan

Abstract: Boiling of water, for purification, commonly practiced in the world, has many problems associated with it like danger of scalding,scaling in the vessels, removal of useful minerals and blandness of taste etc. Water can be made safe for drinking simply by heating at 65°C for 6 minutes. A colour indicating strip was developed which changes colour from red to purple at 67°C. Use of this strip can help in pasteurizing water without the above problems and with considerable energy saving.

Keywords: thermochromic strips, pasteurization indicator, Pakistan

Journal: Journal of Environmental Sciences, vol. 15, no. 6, pp. 863-864, 2003