Method 504.1MDL Mix Back Catalog number: 94020 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11774.12-100-IO 2,3,3',4,4',5,5',6-Octachlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request 11193.2-10MG 1,1,2-Trichloroethane-d3,neat,neat,10mg Price on request 71224 n-Octatriacontane Price on request