EPA Method 525 Internals & Surrogates Back Catalog number: 91161 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 14022-CY5 PAH - Mix 16, 100µg/ml in Cyclohexane, 5ml Price on request 79186 3-Furaldehyde Price on request 678150 Terbufos-sulfone, 100 µg/ml, Acetonitrile, 1ml Price on request