EPA Method 502/524 Surrogate Standard #2 Back Catalog number: 19267 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 60034 CCME PAH Calibration Standard Price on request 677035 2,4,6-Trimethylbenzophenone, 25mg Price on request 59580A Conductance @ 20°C [10,000µmho/cm] Price on request