EPA Method 8141/1657 Surrogate Standard Back Catalog number: 92357 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679434 D3-Acetamiprid, 50mg Price on request E888863 Estradiol 17-Valerate-d12, 2,5mg Price on request 91240 Water Supply Performance Price on request