Reading Refrigerant Gauges, Pressure/Temperature Relationship, What Refrigerant is in the Tank!

This is about the Refrigerant Pressure/Temperature Relationship when the refrigerant is in the Saturated state where Liquid and Vapor refrigerants both exist. Through this Pressure-Temperature Relationship, you can confirm refrigerant what refrigerant is in the bottle or in the system if you know the surrounding air temp and refrigerant pressure at a saturated state. You want to make sure that the system the refrigerant is in has not been turned on in the last hour and if the refrigerant is in a bottle you want to check the pressure after the bottle has been sitting at a stable temperature for at least an hour or more. As long as there are no noncondensable in the system or tank, you will be able to figure out the refrigerant type through this process.