EPA Method 8021B Internal Standard Back Catalog number: 19394 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673220 Carbaryl, 10.0 µg/ml, Acetonitrile, 10ml Price on request 71794 Dithiopyr Price on request MBP-105 2,3,3',4,4'-Pentachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane Price on request