Ozone Treatment of Deionized Water in Technologies of Recombinant Products Y. Madruga, M. Montané, A. Hinojosa, J. Astorga, T. Rumbao, R. Díaz, R. Pérez(1), M. Bataller(1), A. Amador(2), C. Mora(1), A. Aquino(1). Biotechnology and Genetic Engineering Center, Cuba. 1 - Ozone Research Center, Cuba. 2 - National Center for Scientific Research, Cuba. Biotechnological industry demand water of top quality, to meet standards increasingly restrictive. Trough more than 3 years, CIGB's Production Plant has been successfully employing the combination of water deionization followed by ozonation to obtain purified water for its productions, which consistently has met USPXXIII physico-chemical and microbiological regulations. Low doses of ozone have been found to be enough to fulfill the requirements and to guarantee the quality of the productions. Source: 2nd International Symposium on Ozone Applications Havana, Cuba - Mach 24-26, 1997.