EPA Method 525.2 - 526 Internal Standard Back Catalog number: 91297 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 53034 Calibration Standard Mix 2 Price on request S-4294-K-DC Pyrene-d10 and Perylene-d12 Mixture 0329,15 Pyrene-d10 1534,20 Perylene-d12 Concentration: 1.0mg each/mL Unit: 10mL in Certan-bottles Price on request 94515 Organophosphorus Pesticide Standard Price on request