EPA Method 8240A Calibration Check Compounds Back Catalog number: 82412 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1732.30-10MG 8,16-Pyranthrenedione, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 128-70-1 Price on request 57021 Scandium (Sc) Price on request 30105 EPA Method 552,552.1,552.2 Internal Std Price on request