EPA Method 502/524 Volatile Standard Back Catalog number: 93538 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 96890 515.4 Stock Standard Price on request 679598 Promethazine hydrochloride, 250mg Price on request S-4055-25-10IO Sulfur Calibr. Mix. Dibenzothiophene in Isooctane. Units: 5x1mL ampoule, 1x10mL screw cap bottle Chiron No. (Matrix) Concentration Isooctane Xylene White oil 3 cst µgS/g (ppm) Wt.% S-4055-0-IO Price on request