Wherever pain relief is required, for example during childbirth, in emergency medical services, or in dentistry. The QualityMix N₂O nitrous oxide mixer was developed to administer a continuous and precise mixture of medical O₂ and medical N₂O to infants, children, and adults. It is available in 50% N₂O FIX, 0–50% N₂O variable, and 0–70% N₂O variable versions.