Zone de Texte: Ensuring the quality of diagnosis Each diagnosis as well as for global quality control of the laboratory minimum level for internal quality control = positive/negative controls An internal quality control programme : The use of reference material The use of artificially contaminated samples Replicate testing using the same method Comparative testing between analysts of the same sample Comparison of results of different methods identifying different characteristics of a plant pest Retesting of retained plant material or extracts thereof, water or soil samples and insects traps Inter- or intra-laboratory evaluation of documentation of the specific determinants on which diagnosis are based Blind testing by processing samples with known levels of pests between routine samples. External proficiency programme or ad hoc proficiency tests Zone de Texte: Standard on basic requirements for quality management in plant pest diagnosis laboratories Zone de Texte: Ensuring the quality of diagnosis Each diagnosis as well as for global quality control of the laboratory minimum level for internal quality control = positive/negative controls An internal quality control programme : The use of reference material The use of artificially contaminated samples Replicate testing using the same method Comparative testing between analysts of the same sample Comparison of results of different methods identifying different characteristics of a plant pest Retesting of retained plant material or extracts thereof, water or soil samples and insects traps Inter- or intra-laboratory evaluation of documentation of the specific determinants on which diagnosis are based Blind testing by processing samples with known levels of pests between routine samples. External proficiency programme or ad hoc proficiency tests Zone de Texte: Standard on basic requirements for quality management in plant pest diagnosis laboratories

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