Overview
ISO 5985:2002/Amd 1:2015 is an amendment to the International Standard ISO 5985:2002, which specifies the method for the determination of ash insoluble in hydrochloric acid in animal feeding stuffs. This standard amendment enhances the testing procedure and refines definitions to ensure consistency, accuracy, and reliability in the measurement of ash content within animal feed products. Developed by ISO/TC 34, Subcommittee SC 10, focused on food products and animal feeding stuffs, this document plays a crucial role in feed quality control and safety analysis.
Key Topics
- Ash Insoluble in Hydrochloric Acid: Defines and measures the portion of ash remaining after treatment with hydrochloric acid, reflecting the presence of siliceous and other acid-insoluble materials.
- Amendment Details:
- Introduction of ash-free filter paper requirements, ensuring the filter has a maximum ash content of 0.01% to avoid contamination.
- Modified filtration instructions using ash-free filter paper to improve testing accuracy.
- Updated terminology: replacing "Crude ash insoluble in HCl" with "Ash insoluble in HCl" for clarity.
- Correction of units from grams per kilogram to grams per 100 grams for uniformity with results expression.
- Statistical Performance Data:
- Repeatability and reproducibility limits are provided for various sample types (e.g., fishmeal, tapioca, meat meal, piglet feed, broiler feed, barley, palm kernel expellers).
- Tables with refined values for repeatability coefficients and reproducibility coefficients ensure scientific rigor in interlaboratory testing.
Applications
ISO 5985:2002/Amd 1:2015 is essential for laboratories and quality control units engaged in the feed industry. It provides:
- Quality Assurance: Accurate determination of insoluble ash content helps assess feed purity and detect contamination by soil, sand, or silica-based materials.
- Regulatory Compliance: Enables compliance with national and international requirements on feed quality and safety.
- Feed Formulation: Supports formulation accuracy by quantifying non-nutritive mineral content that affects feed digestibility and nutrient availability.
- Research and Development: Facilitates scientific studies on feed composition and quality assessment in animal nutrition.
Related Standards
- ISO 6496 – Animal feeding stuffs - Determination of moisture and other volatile matter content.
- ISO 5984 – Animal feeding stuffs - Determination of crude ash.
- ISO 2293 – Animal feeding stuffs - Determination of crude fiber content.
- Codex Alimentarius Guidelines related to animal feed quality and safety.
- ISO/IEC Directives, Part 1 and Part 2 – Procedures and editorial rules for standard development and maintenance.
By adhering to ISO 5985:2002/Amd 1:2015, organizations can ensure precise, standardized testing of ash insoluble in hydrochloric acid in animal feeding stuffs, promoting high-quality feed production and supporting animal health and safety worldwide. This amendment reinforces best practices in analytical methodology, critical for stakeholders in the animal nutrition and feed manufacturing sectors.
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