EPA Method 525 Internals & Surrogates Back Catalog number: 91161 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679676 13C6-Oxyphenbutazone, 10mg Price on request 9446.12-100-AN Merphos Price on request 674849 Boscalid (Nicobifen), 100mg Price on request