EPA Method 515.1 Internal Standard Back Catalog number: 31023 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8649.12-50-T 1,2,3,4,7,8-Hexachlorodibenz-p-dioxin, 50µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. Price on request 96071 Pesticide Mix #21 Conc Price on request S-4371-100-5AC EPA 528 rev. 1.0 Sample Fortification Solution 2 100µg/mL in acetone; unit: 1x5mL 2396.8 2,4-Dimethylphenol-3,5,6-d3 [93951-75-8] Price on request