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Choosing reference samples for EPR concentration measurements. Part 1. General introduction and systems of S = 12

General IntroductionEngineeringPassive SamplingEpr Concentration MeasurementsMeasurementCalibrationSample TreatmentElectron Paramagnetic ResonanceEducationReference SamplesAnalytical ChemistryBiostatisticsInstrumentationSample PreparationStatistics