Gas purification machines; Refrigerating cabinets; Immersion style chiller for use in food processing, functioning as last bacteriological intervention point in the chilling system; Gas injectors for disbursing solids and/or liquids for purification and sterilization purposes; Portable electric household appliance used to kill bacteria and viruses on food; Sterilizers; Ozone generators that kill mold and mildew; Germicidal lamps for purifying air; Sterilization units for medical instruments