(Use Part# 82423) EPA Method 8240A Mix #3 Back Catalog number: 82403 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50246 ICP-MS Internal Standard Price on request 79080 EPA Method 8330 Analyte Price on request 10882.20-10MG 17alpha-Ethynylestradiol-2,4,16,16-d4,neat,neat,10mg, Price on request