EPA Method 552.2 - Surrogate Standard Back Catalog number: 30109 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 83559 m-Tolualdehyde-DNPH, 100µg/ml in Acetonitrile, 1ml Price on request 68C-PAR Native Toxics/LOC Stock Solution, 1.2ml, nonane Price on request 51127 Aromatics Quantitative Internal Standard Price on request