Which of the following describes a proper refrigerant recovery procedure?

Using recovery equipment designed for the refrigerant is a fundamental part of a proper refrigerant recovery procedure. This ensures that the equipment is capable of safely handling the specific type of refrigerant being recovered, which is crucial for both safety and environmental compliance. Different refrigerants have distinct properties, such as pressure and chemical composition, which require specific types of recovery machines to effectively and safely manage them. Utilizing the appropriate equipment helps prevent potential leaks, ensures maximum recovery of the refrigerant, and avoids contamination of the recovered material.

The other options do not align with proper recovery practices. Venting refrigerants into the atmosphere contributes to environmental harm and violates regulations. Mixing refrigerants can lead to difficulties in recovery and disposal, as it complicates the process and can create hazardous mixtures. Lastly, performing recovery in unventilated areas poses serious health risks due to the potential accumulation of harmful gases in confined spaces. Following the protocol of using the correct recovery equipment is essential for maintaining safety standards and protecting the environment.