EPA Method 200.8Mix Back Catalog number: 59115 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 63121 PCB No. 121, 1000μg/ml in Isooctane, 1ml Price on request 50694 Custom Metal Mix Price on request 679495 13C6-Sulfamethoxazole, 10mg Price on request