SIFT-MS provide quantitatively and qualitatively analyze in real time. As it is not affected by moisture, and also no sample preparation is required, its analysis capability is pptv level without sample pre-concentration or pre-treatment. SIFT MS identifying various compounds by chemical reaction via chemical ionization which use 8 different reagent ions generated by instrument itself Instead of physical separation using a column such like GC-MS. Mixed samples can be analyzed in a second without physical separation. SIFT-MS is world No 1. instrument for real-time trace analysis.