Draft Standard Observation | Why the Microbial Quality of Dishwashing Detergent under ISO 21703 Revision Returns to "Object—Method—Version"

ISO 21703:2019 is still marked as current by ISO and was confirmed in 2024. Meanwhile, the proposed replacement, the second edition ISO/DIS 21703, remains under development, with the DIS ballot opened on July 28, 2026. This status must be stated clearly: the industry may study the revision direction in advance, but must not describe a draft under ballot as a new standard already in force.

The current page limits the standard scope to microbiological test methods for liquid hand dishwashing detergents, including the enumeration of aerobic mesophilic bacteria, and the detection of Escherichia coli and Pseudomonas aeruginosa. It addresses how the specified object can be tested under the specified methods, without implying that the product possesses surface disinfection capabilities, nor can it directly generate claims regarding "microbial reduction rate" or public health benefits.

The product maintains its microbiological quality within the shelf life period, which also involves the design of the preservation system. The European Chemicals Agency's guidance on PT6 includes controlling microbiological degradation during storage to ensure the shelf life, as a preservative application; the BPC opinion on specific active substances also discusses the bacterial, yeast, and mold efficacy in washing and cleaning liquids. These data explain the preservation purpose but are applicable only to the substances, uses, and conditions described in the documentation and cannot be generalized to all formulations or replace market judgments in China.

EPHYON's public consumer goods cleaning ODM service page consolidates the usage scenarios, target markets, formula parameters, pH and viscosity, samples, packaging materials, and mass production feasibility into a single project path. It clearly states that final efficacy, safety, and environmental claims require applicable testing and documentation. This process is suitable for "object—method—version" management, but the publicly available information does not prove that EPHYON has adopted ISO 21703, a specific preservative, or achieved certain microbial results.

Raw material selection and final product quality should not be conflated. The U.S. EPA Safer Choice program categorizes preservatives as a functional class requiring assessment according to corresponding hazard criteria, which aids in understanding the component-level screening logic but does not prove the microbial quality, preservation efficacy, or certification status of a final product. A system can simultaneously address raw material hazards and product stability, but separate evidence must be maintained for each category.

Method innovation also requires boundaries. An original study published in 2026 evaluated a high-throughput antimicrobial efficacy method based on ATP and compared it with traditional AET results; in its sample set, the study reported 44% specificity and 71% predictive value. Such studies can suggest screening efficiency and subsequent validation issues, but they cannot declare a new method as a replacement for standards based on a single paper, nor can they extrapolate to the effects on any EPHYON products.

For the manufacturing and brand teams, a more practical approach is to establish a version chain: document the test subject and purpose, followed by the formula and storage system version, sample batch, test method and version, laboratory, criteria for judgment, and results; when referencing conclusions in packaging and sales materials, trace back to the same formula and applicable conditions. Any standard revisions, formula adjustments, or changes in packaging materials should trigger a re-review, rather than merely replacing the date on the report cover.

During ODM collaboration, the brand can list the target market and necessary evidence during the project initiation phase. EPHYON's formulation, sample making, packaging material adaptation, and scaling-up stages provide project milestones for document alignment. It is important to note that process capability does not equate to the completion of all validations for a single project. The specific indicators that must be tested, the version of the method to be used, and the extent of the claims that the results can support must still be confirmed on a case-by-case basis according to the current sample, applicable regulations, and valid documents.

Therefore, what is noteworthy about the revision of ISO 21703 is not whether it adds an extra promotional highlight, but that testing methods also have versions, and the applicability of the preservation system has boundaries. External communications must maintain a consistent chain with the evidence of the final product. The most valuable preparation during the draft stage is to fill in the missing fields and assign responsibilities in advance, rather than rushing to include undetermined content on the packaging.

Scope: This document is based on the standards draft and quality management observations developed using ISO (including ISO/DIS 21703), ECHA, EPA, original research, and EPHYON's publicly available service information as of September 22, 2026. It does not constitute regulatory, formula, or testing recommendations. The microbiological indicators, preservation systems, test methods, and claims for specific products should be determined in conjunction with the final standard, target market regulations, current formulas, and valid testing data.