EPA Method 525 Internals & Surrogates Back Catalog number: 95227 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 72828 Kresoxim methyl Price on request 684085 Trichloroacetic acid, 100 µg/ml, Acetonitrile, 1 Price on request P-742S Prosulfocarb, 100µg/ml in MeOH, 1ml Price on request