EPA Method 551.1 Internal Standard Back Catalog number: 30103 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675713 Pyraflufen-ethyl, 10.0 µg/ml, Acetonitrile, 10ml Price on request 680510 TFNA, 100mg Price on request 20046 CLP Volatiles - Low Concentration Mix #5 Price on request