EPA Method 200.8Mix Back Catalog number: 59109 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3315.13-100-CY Benfluralin Price on request 676747 Sodium perchlorate monohydrate, 100 µg/ml, Water, Price on request E888000 17ß-Estradiol, 50mg Price on request