EPA Method 525 Internals & Surrogates Back Catalog number: 95227 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended X9164 Aroclor 1254 Price on request B207700 Benzo[ghi]perylene, 100mg Price on request 70675 Ethion, 1000µg/ml in MeOH, 1ml Price on request