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Water quality — Interlaboratory comparisons for proficiency testing of analytical chemistry laboratories
90.93 Standard confirmed
Water quality — Characterization of analytical methods — Guidelines for the selection of a representative matrix
90.93 Standard confirmed
Water quality — Determination of selected non-polar substances — Method using gas chromatography with mass spectrometric detection (GC-MS)
90.93 Standard confirmed
Water quality — Guidance and requirements for designing an interlaboratory trial for validation of analytical methods
60.60 Standard published