EPA Method 508.1 & 525.2 Pesticide Standard Back Catalog number: 91970 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677783 beta-Estradiol hemihydrate, 100 µg/ml, Methanol, Price on request L20007700IO PCB No. 77, 10µg/ml in Isooctane, 10ml Price on request 72640 Dimethyl suberate Price on request