Dow FR-250, 35 µg/mL in Isooctane, 1ml Back Catalog number: B-250S-0.35X Availability: In the manufacturer's stock Price on request - + Recommended 70913 4-Nitrobiphenyl Price on request 19029 EPA Method 504 - EDB & DBCP Price on request 70031 Benzo(b)fluoranthene Price on request