Noncondensable gases inside a recovery cylinder are defined as gases that do what under ambient conditions?

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Noncondensable gases are those that stay in the gaseous state at ambient (room) conditions. In a recovery cylinder, this means air, moisture, or other gases won’t liquefy under normal room temperatures and pressures. Their presence takes up volume and raises pressure, which can hinder efficient refrigerant recovery and skew measurements. The idea is that noncondensables do not condense into liquid at ambient conditions, unlike the refrigerant itself, which can liquefy under the right conditions.