Sterilization process indicators: biological vs chemical.
D004864:Equipment and Supplies / Q000592:standards*; D005027:Ethylene Oxide; D007202:Indicators and Reagents / Q000592:standards; D013170:Spores; D013227:Steam; D013242:Sterilization / Q000592:standards*; D013997:Time Factors
D007202:Indicators and Reagents; D013227:Steam; D005027:Ethylene Oxide