EPA Method 624 Internal / Surrogate Standard Back Catalog number: 92559 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1553.23-K-IO n-Tricosane-d48, 1000µg/ml in IO, 1ml Price on request 3379.8-100 Dicrotophos, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 141-66-2 Price on request 59973 ICP-MS Calibration Standard #2 Price on request