Assertion: ozone | /r/HasProperty | safe
Facets:
value: at concentrations
type: OTHER
value: under normal circumstances
type: OTHER
Source sentences:
text: Ozone Is Safe and Non-Toxic
text: Ozone is a colourless gas which is safe to use.
text: Ozone must be injected correctly to be safe and effective.
text: These adverse effects are rare and, under normal circumstances, ozone is considered to be safe.
text: Ozone is effective and safe at concentrations 3 to 8 ppm in water (parts per million or mg/L).
text: But Ozone is safe, and very valuable, when used as prescribed for high-dose shock therapy with people and pets absent.