Anywhere pain relief is needed, such as during childbirth, in emergency medical services, or in dentistry. The QualityMix_N2Onitrous oxide mixer was developed to deliver a continuous and precise mixture of medical-grade_O2 and medical-grade_N2Oto infants, children, and adults. It is available in the following versions: 50%_N2OFIX, 0–50%_N2Ovariable, and 0–70%_N2Ovariable.