A national standard that has been in force for nearly 20 years is undergoing a systemic update, and the pace is faster than many companies expected. In June 2025, the revision of the absorption method was approved, and within months a review meeting was held in Zhejiang. Meanwhile, the revision of the shaking method, initiated in June 2024, has already passed review and is pending official release. This means the entire evaluation system for antimicrobial textiles will be overhauled within one to two years, leaving a narrow window for companies to adjust products and testing protocols.
The logic behind the standard revision
The old GB/T 20944 series, published between 2007 and 2008, was built on the technology and market conditions of that era. Over nearly two decades, antimicrobial agents have expanded from inorganic silver to organosilicon quaternary ammonium salts, photocatalytic materials, and other routes. Textile forms have also evolved from conventional woven fabrics to nonwovens and multi-layer composites. The original absorption method’s specifications for sample size, bacterial strains, and incubation conditions no longer accurately reflect the antimicrobial mechanisms and real-world usage of new materials.
The direct driver of the revision is methodological lag, but the deeper driver is a market credibility crisis. Antimicrobial function is invisible and intangible, leaving consumers to rely solely on labels and marketing claims. Without a unified and scientific testing framework, the same fabric can yield wildly different results across laboratories, creating room for exaggerated claims. The standard update aims to close this loophole at the technical level, making antimicrobial claims verifiable.
Content of revision and industry transmission
Public information indicates that both revised standards will fully replace the old versions, not merely patch them. The shaking method (Part 3) has project number 20241952-T-608, while the absorption method (Part 2) carries 20251603-T-608. The drafting units include testing agencies, research institutes, brand companies, and new material enterprises—a composition that signals the standard is no longer a purely academic product but a consensus document shaped by the entire supply chain.
For upstream raw material suppliers, the new standard may change the evaluation baseline for antimicrobial agents, potentially replacing additives that fail stricter tests. For midstream fabric mills, increased testing items or stricter conditions mean higher costs, especially for small and medium enterprises that may need to resubmit samples, adjust processes, or switch suppliers. For brands and buyers, the upgrade offers an opportunity to re-screen suppliers—companies relying on vague marketing rather than real technical reserves will be weeded out faster.
Market expectations and compliance preparation
Antimicrobial textiles have expanded from underwear and socks to sportswear, medical textiles, and home soft furnishings, and consumer demand for hygiene functions is still rising. But demand growth does not mean all antimicrobial products will share the benefits. Once the new standard takes effect, test results will become a hard ticket for entering mainstream channels. Exporters should especially note the differences between the national standard and common international methods such as AATCC 100 and ISO 20743 in terms of bacterial strains, inoculation, and result expression. Whether the revised national standard aligns with international methods will directly affect testing strategies and cost structures for exports.
Looking at the timeline, once the shaking method standard is released, companies can conduct pre-testing according to the new method. The absorption method review has already been held, with approval expected within the next year. It is advisable for companies not to wait until the standard is formally implemented, but to proactively send existing products to accredited laboratories for baseline testing under the new methods, assessing process and cost compatibility.