EPA Method 8240A Internal Standard Back Catalog number: 22003 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50013 Multi-Element Calibration Standard-4 Price on request XA16290000AL Prochloraz, 100µg/mL in Acetonitrile, 1ml Price on request 33351 1-Octene Price on request