EPA Method 548 Analyte Back Catalog number: 30047 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11694.12-100-IO 2,3,3',6-Tetrachlorobiphenyl,100 µg/mL,isooctane,1mL, Price on request 97658 Dow 624B Volatile Internal/Surrogate Standard Price on request 71513 Decamethylcyclopentasiloxane Price on request