EPA Method 507 Analyte Mix #8 Back Catalog number: 94131 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679823 Tilmicosin, 100 µg/ml, Methanol, 1ml Price on request 676437 Pyriofenone, 10mg Price on request 674558 Fensulfothion, 100mg Price on request