使用 Agilent 490 微型气相色谱对受污染的假冒制冷剂进行组分分析
The importance of refrigerant composition analysis became clear when contami-nated and counterfeit refrigerant 1,1,1,2-tetrafluorethane (R134a) appeared on themarket. Chloromethane (R40), present in this counterfeit R134a, is found to beincompatible with aluminum surfaces in the refrigerant system. A chemical reactiontakes place resulting in a pyrophoric compound upon contact with air. This applica-tion note highlights fast, on-site characterization of the refrigerant mixture using the Agilent 490 Micro GC.