Aroclor 1221 in Transformer Oil Back Catalog number: 61221 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676591 Terephthalic acid, 250mg Price on request S-4254-50-10T Sulfur Calibr. Mix. Dibenzothiophene in Toluene (20 cSt)Unit: 10mL screw-capped bottle Matrix White oil White Oil Concentration Isooctane Toluene 3 cSt Price on request 677671 4,4'-Bis(a,a-dimethylbenzyl)diphenylamine, 250mg Price on request