Biological evaluation of medical devices. Ethylene oxide sterilization residuals Medical equipment, Biological analysis & testing, Sterile equipment, Sterilization (hygiene), Ethylene oxide, Dose (drug), Conformity, Formulae (mathematics), Safety measures, Factor of safety, Biological hazards, Chemical hazards, Sampling methods, Determination of content, Extraction methods of analysis, Temperature, Aqueous extraction methods, Solvent extraction methods, Gas chromatography, Chemical analysis & testing, Standard solutions, Precision, Testing conditions, Calibration