GB/T 15268-2024 in English

1. Background and significance of the standard revision

GB/T15268-2024 "Fresh silkworm cocoons" is the second revision of the national standard after the 2008 version. This revision mainly optimizes the definition of terms, quality classification, sampling methods and inspection rules, adds key indicators such as the pupation cocoon rate, and refines the packaging, storage and transportation requirements. These adjustments are aimed at improving the quality assessment system for fresh silkworm cocoons and ensuring its fairness and scientificity in international trade and domestic markets.

2. Comparison of Standard Frameworks

3. Recommendations for standard implementation

3.1 Recommendations for optimizing the sampling and testing process:

• Strictly select instruments and equipment in accordance with the standard requirements to ensure that the accuracy meets the requirements (such as the range and graduation value of electronic scales).
• Pay attention to environmental conditions during sampling to avoid external factors affecting the properties of samples.
• During the inspection process, focus on monitoring the pupation cocoon rate and cleanliness index, as they have a greater impact on the final classification.

3.2 Recommendations for quality management:

• Establish an internal quality standard system for the enterprise to ensure compliance with national standards.
• Strengthen staff training, especially the understanding and operation of the newly introduced pupation cocoon rate and cleanliness indicators.
• In international trade, it is recommended to explicitly adopt GB/T15268-2024 as the basis for quality judgment with partners.

4. Analysis of standard technology evolution

From the first release in 1994 to the three revisions in 2024, the GB/T15268 standard has been continuously improved:

• 1994 version: Preliminary establishment of a quality assessment system for fresh mulberry silkworm cocoons.
• 2008 version: Refine the quality grading requirements and introduce some inspection methods.
• 2024 version: Focus on optimizing term definitions, correcting indicators and inspection rules to improve the scientific nature and operability of the standard.