Descriptors | Chemical analysis and testing, Sampling methods, Variability, Statistics, Error analysis, Errors, Heterogeneity, Homogeneity, Statistical distribution, Probability theory, Sampling equipment, Safety measures, Chemical hazards, Dangerous materials, Explosives, Oxidizing agents, Flammable materials, Fire risks, Fire safety, Toxic materials, Poisons, Corrosive materials, Radioactive materials, Radiation hazards, Sampling tables |