氮吹儀采用惰性氣體對加熱樣液進行吹掃，使待處理樣品迅速濃縮，達到快速分離純化的效果。該方法操作簡便，尤其可以同時處理多個樣品，大大縮短了檢測時間。被廣泛應用于農殘檢測，制藥行業和通用研究中的樣品批量處理。Pressuredgasblowingconcentratorscarryoninertgasesblowingontheheatingsamples,concentratethesamplesrepidly,inordertoachievefastseperationefforts.Especiallytheycanoperatemuti-samplessimultaneously,shortentestingtime.Theyarewidelyusedindetectpesticideresidues,pharmacyandmuti-samplesexperimentingeneralareas.