So I've been hearing this word and seeing this word on the diy incubators and a person on youtube. I'm almost finished building my incubator, all I need is heat cable and thermostat, but before I get that I want to know what this freon looks like and see if I did take it out. I gutted my broken mini fridge without knowing whats what. Can anyone tell me what the freon looks like. I took out this black engine looking thing with all the wires hooked up to it and took out the wire that went into the freezer part of the fridge.