T/ZLGL 1001.2-2024 Internal Quality Control of Test Results for Specialty Agricultural Products Part 2: Testing of Small-Grained Coffee

Scope

Main technical content: This standard applies to the internal quality control of laboratory testing results for the quality of small-grained coffee. This standard is drafted in strict accordance with the rules given in GB/T 1.1—2020 "Guidelines for Standardization Work—Part 1: Structures and Drafting Rules for Standardization Documents". It is mainly based on existing national standards and norms such as GB/T 27404 "Laboratory Quality Control Specifications—Food Physical and Chemical Testing", GB/T 27405 "Laboratory Quality Control Specifications—Food Microbiological Testing", GB/T 32465 "Verification of Chemical Analysis Methods—Confirmation and Internal Quality Control Requirements", and GB/T 32467 "Verification and Internal Quality Control of Chemical Analysis Methods—Terms and Definitions". There are a total of 13 terms: small-grained coffee, internal quality control, matrix standard substances, standard samples, quality control samples, control charts, blank analysis, repeat testing, spike recovery rate, personnel comparison, instrument comparison, method comparison, and sample re-testing; the definitions of some terms refer to relevant standards. The quality requirements and test methods of this standard refer to the relevant chapters of DB53/T 371. It stipulates from four aspects: appearance and sensory characteristics, physical and chemical indicators, safety indicators, and net content. The requirements for internal quality control include: general requirements, matrix standard substances, sensory inspection, physical and chemical indicator inspection, and microbiological indicator inspection. The evaluation of internal quality control results, this standard provides the quality control evaluation steps corresponding to sensory quality inspection, physical and chemical indicator inspection, and microbiological inspection. And gives relevant quality control chart examples. This standard complies with the relevant provisions of related national standards and

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