EPA Method 8021B Internal Standard Back Catalog number: 19394 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676359 Spirodiclofen-enol, 10mg Price on request 4H108 2',3,3',4',5-Pentachloro-4-biphenylol (96.5%), 1.2ml x 48.3ug/ml, nonane Price on request M3-CYA [13C3]-Cyanuric Acid, 1.2ml x 100ug/ml, water Price on request