EPA Method 525 Internals & Surrogates Back Catalog number: 95227 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 681377 3-Phenoxybenzoic acid, 100mg Price on request A15811500WA-100 Oxypurinol, 100µg/mL in Water, 1ml Price on request 8461.12-100-CY Phoxim Price on request