1,2,3,5-Tetrachlorobenzene, 1000µg/mLin Isooctane, 1ml Back Catalog number: 3751.6-K-IO Manufacturer: CHIRON AS Availability: 3 weeks Price on request - + Recommended 30055 EPA Method 552 Internal Standard Price on request 3493.10-100-AN Propham Price on request 11997.12-10MG Tolbutamide-d9 (butyl-d9),neat,neat,10mg, Price on request