EPA Method 8081A Pesticides QC Mix Back Catalog number: 92280 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8675.14-100-AN Oxadixyl Price on request 54003 Hexamethylenetetramine, ACS Price on request 672998 17a-Ethinylestradiol, 250mg Price on request