Safety Precautions for Ozone

3/6/2017 (Permalink)

Ozone (also called activated oxygen) is a toxic gas and must be used carefully. The Occupational Safety and Health Administration (OSHA) has established a permissible exposure level (PEL) for ozone at 0.1 ppm, meaning a safe level of ozone exposure is 0.1 parts per million (ppm) of air volume. ozone generators produce concentrations from 0.3 t 1.5 ppm, so ozone deodorization procedures could potentially produce levels of ozone that would be hazardous in prolonged exposure situations. 

Like most "chemical" products, ozone can be hazardous, but if used properly this method of deodorization is as safe as other available methods. Observe safety precautions when deodorizing with ozone. Use activated oxygen only in unoccupied areas. Ozone is toxic when high concentrations are inhaled, so remove all people and pets from the areas to be ozoned. Place "Ozone Warning" signs at all entries prior to performing activated oxygen procedures. 

Avoid overexposure to ozone concentrations of .05 ppm and greater. Recommended personal protective equipment for working with ozone includes safety glasses or goggles, chemical-resistant gloves, and NIOSH-approved respirator with an organic vapor cartridge. High concentrations may cause respiratory ailments, dry throats, and severe eye irritation. If you experience any reactions, move to fresh air immediately and seek medical help. 

Ventilating the treated area is recommended. Ozone dissipates completely within minutes and leaves no residue, strong fragrances, or chemicals to which people may be allergic or sensitive. Wait 15 to 45 minutes after ozone generation has stopped to safely enter an ozoned room. Ventilate the treated area at least 30 minutes prior to reentry.