EPA Method 8021B Internal Standard Back Catalog number: 19394 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 681287 D5-Pyraflufen-ethyl, 100 µg/ml, Acetonitrile, 1m Price on request 70886 2,4,6-Trichloroanisole Price on request 2946.9-100-AC Fenitrothion-d6 (O,O-dimethyl-d6), 100µg/ml in Acetone, 1ml Price on request