GB/T 45761-2025Determination of antiviral activity of photocatalytic materials under indoor lighting environment - Test method using bacteriophage Q-beta (English PDF)
室内照明环境下光催化材料抗病毒活性的测定 Q-β噬菌体测试法
This is a limited preview
Buy now to download the full PDF (29 pages)
Need quotation for your management?
Get a formal quotation for GB/T 45761-2025 in 30 minutes.
Issued by
State Administration for Market Regulation, China National Standardization Administration
Level / Type
National · Recommended
Issue date
June 30, 2025
Implementation date
January 1, 2026
Scope
GB/T 45761-2025 is the English-translated version of 室内照明环境下光催化材料抗病毒活性的测定 Q-β噬菌体测试法.
GB/T 45761-2025 is the Chinese national test for the antiviral activity of indoor-light-active photocatalysts and of surfaces coated with them, measured as the fall in titre of bacteriophage Q-beta, which stands in for influenza virus, after illumination.
It covers the phage and its host strain, the culture media, the test equipment from the covering film and moisture-retaining dish to the lamp, the UV cut-off filter and the lux meter, the indoor lighting conditions, the phage titre count and the calculation of activity under light and in the dark.
It applies to sheet, plate and flat materials but not to powders, granules or porous ones, and only to materials claimed as antiviral. Trained microbiology laboratories run it.
Identical to ISO 18071:2016, it was issued on 30 June 2025 and has applied since 1 January 2026.
Found what you need?
Document preview — GB/T 45761-2025
National Standard of the People's Republic of China
- ICS
- 81.060.30
- Classification
- Q 30
Issued by: State Administration for Market Regulation, China National Standardization Administration
Contents
- Preface
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 4 Symbols
- 5 Principle
- 6 Materials
- 6.1 Test microorganisms and their preparation
- 6.2 Culture medium
- 7 Instruments and Equipment
- 7.1 Test Equipment
- 7.2 Covering film
- 7.3 Moisturizing glass
- 7.4 Glass tube or glass rod
- 7.5 filter paper
- 7.6 Light Source
- 7.7 UV cut-off filter
- 7.8 Lux meter
- 7.9 Centrifuge
- 7.10 Sterile filter
- 8 Sample
- 9 Test Procedure
- 9.1 Testing Process
- 9.2 Bacterial suspension preparation procedure
- 9.3 Phage Solution Preparation Procedure
- 9.4 Indoor Light-Response Photocatalytic Antiviral Activity Test Procedure
- 9.5 Indoor lighting conditions
- 9.6 Phage titer test
- 10 Result calculation
- 10.1 General
- 10.2 Determination of test validity
- 10.3 Calculation of indoor light-responsive photocatalytic antiviral activity
- 10.4 Calculation of non-indoor light-responsive photocatalytic antiviral activity
- 11 Test Report
- Reference
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.
This document is equivalent to ISO 18071:2016 "Fine ceramics (advanced ceramics, advanced technical ceramics) - Semiconductors for indoor lighting environments" Determination of antiviral activity of photocatalytic materials by Q-beta phage test method.
The following minimal editorial changes have been made to this document.
--- To coordinate with the existing standard, the name of the standard is changed to "Determination of antiviral activity of photocatalytic materials under indoor lighting conditions" Bacteria Test Method;
--- Added Note 2 to the "Principles" chapter (see Chapter 5);
--- Added introductory words for the items (see 6.1.2, 6.1.3, 8, 9.2, 9.3, 9.4, 9.6).
1 Scope
This document specifies the method for testing the antiviral activity of indoor light-responsive photocatalysts or materials with indoor light-responsive photocatalyst films on their surfaces.
This method determines the antiviral activity of Q-beta phage by counting the decrease in its titer after light exposure.
Note: In the test method, Q-beta phage replaces influenza virus as the test microorganism.
This document is applicable to different types of indoor light-responsive photocatalytic materials in the field of building materials, various application material substrates including sheet, plate, flat Plate-like, excluding powder, granular or porous indoor light-responsive photocatalytic materials.
This document is applicable to indoor light-responsive photocatalytic materials with antiviral properties, and is not applicable to materials with antibacterial properties, antifungal properties, etc.
Materials with other uses such as energy conservation, water pollutant degradation, self-cleaning, anti-fog and air purification properties.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document.
ISO 14605 Fine ceramics (advanced ceramics, advanced technical ceramics) - Light sources for testing semiconductor photocatalytic materials under indoor lighting conditions
ISO 27447 Fine ceramics (advanced ceramics, advanced technical ceramics) - Test method for antimicrobial activity of semiconductor photocatalytic materials
ISO 80000-1 Quantities and units - Part 1: General
3 Terms and Definitions
The following terms and definitions apply to this document.
3.3 Ordinary lighting environment with pure artificial light source
3.1 Photocatalyst
Under the stimulation of certain light sources, substances that can produce catalytic functions include decomposition and removal of pollutants in air and water, deodorization, and disease resistance. Virus, anti-bacteria, anti-fungal, self-cleaning and anti-fog, etc.
3.2 Indoor-light-activephotocatalyst
Photocatalysts excited by artificial light sources for general lighting (such as indoor lighting environments).
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 29 pages — is available in the English PDF.
Referenced standards
Normative references
ISO 14605 · ISO 27447 · ISO 80000-1
How to Download GB/T 45761-2025
- 1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
- 2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
- 3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
- 4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.
Related Standards
GB/T 10003-2026 — Biaxially oriented polypropylene (BOPP) film
GB/T 10004-2026 — Plastic/Plastic laminated films and pouches for packaging
GB/T 10007-2026 — Rigid cellular plastics - Determination of shear properties
Secure payment via Stripe
Payments accepted
GB/T 45761-2025
$300.00