HIKARI GIN-Tech is a photocatalyst of anatase TiO2 powders, 7nm in diameter, covered with satellites of extremely fine particles of silver. The synergistic reaction of TiO2 and Ag gives it an unrivaled powerful antibacterial function effective against a wide variety of pathogenic and resistant bacteria spreading in clinics. The laboratory test proved it is also effectual against tuberculosis bacteria. The spray with HIKARI GIN-Tech suspending in alcohol demonstrated the same function as powders themselves. The HIKARI GIN-Tech application products are under field tests in clinics with promising results.