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目的对盲样验证能力进行测试,结合能力验证计划结果报告对测试结果进行分析。方法盲样按作业指导书中比例稀释后,应用GB/T 18204.26-2000酚试剂分光光度法进行测试。结果能力验证测试结果为不满意结果。本文从稀释操作步骤、方法选择、玻璃量器容量差异和不同批号标液4个方面进行了测试和分析,为采取纠正措施提供了依据。结论稀释操作步骤不规范、选择方法稀释倍数大、不同组别玻璃量器容量有较大偏差,都可能是实验室能力验证取得不满意结果的主要原因。
Objective To test the ability of blind proofing and analyze the test results in combination with the proficiency testing plan report. Method Blind sample according to the operating instructions in the proportion of dilution, the application of GB / T 18204.26-2000 phenol reagent spectrophotometry for testing. Results The proficiency testing results were unsatisfactory. In this paper, four steps of dilution operation, method selection, glass volumetric capacity difference and different lot number standards were tested and analyzed, which provided the basis for corrective measures. Conclusion The non-standard dilution procedures, large selection dilution methods, and large deviations in the glass volume of different groups may be the main reasons for the unsatisfactory results of laboratory proficiency testing.