GB/T 45761-2025 Determination of antiviral activity of photocatalytic materials under indoor lighting environment—Test method using bacteriophage Q-beta

Scope

This document specifies a method for testing the antiviral activity of indoor light-responsive photocatalysts or materials with indoor light-responsive photocatalyst films. The method determines their antiviral activity by counting the reduction in the titer of Q-β phage after exposure to light.
Note: In the experimental method, Q-β phage is used instead of influenza virus as the test microorganism.
This document is applicable to various types of indoor light-responsive photocatalytic materials in the building materials field, including sheet-like, board-like, and flat-panel substrates, but excluding powder, granules, or porous indoor light-responsive photocatalytic materials.
This document is applicable to indoor light-responsive photocatalytic materials with antiviral properties, but not to materials with other applications such as antibacterial properties, antifungal properties, water pollutant degradation, self-cleaning, anti-fogging, and air purification.

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