1. 什么是定性？=僅判定成分是什么，不判定成分有多少                                                                                                                                                       2. 主成分指什么？=樣品中有機類主要功能性主體成分，如：
1）改性PP材料或粒料中的PP成分
2）改性PC/ABS合金材料或粒料中的PC成分和ABS成分
3）聚氨酯涂料的PU成分等                                                                                                                                                                                
3.橡膠主成份推薦使用PGC-MS方法來測試較為便捷.                                                                                                                                                                                                                    
4.若客戶對主成分定性有其他特殊要求，需先與實驗室溝通確認，相應價格另議