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General description of the QS scheme with its regulations such as system participation, use of the QS certification mark, sanction procedures, crisis and incident management, etc.

Protocol for documenting case-related consultation after a complaint has been identified.

Specifications for the sampling procedure and sample preparation for nitrate determination.

Evaluation criteria laboratory competence test.

Data entry form for laboratories to apply for QS recognition in residue monitoring.

Sampling protocol for sending the sample to the laboratory. Filled out by the sampler.