EPA Method 552,552.1,552.2 Internal Std Back Catalog number: 30105 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 52127 WS Amp 1 Trace Elements Price on request S-13561A1-1ML Thiacloprid, 100µg/mL in Acetonitrile, 1ml Price on request 52519 EPA Method 300.0 Anions QC Standard Price on request