EPA Method 525 Internals & Surrogates Back Catalog number: 95227 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4055-1-IOX5 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 C14126200 1,7-Heptanedicarboxylic acid (Azelaic Acid), 250mg Price on request 673749 Bromoxynil, 100 µg/ml, Ethyl acetate, 5ml Price on request