EPA Method 524.3 - Internal Standard Back Catalog number: 95488 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9998.18 (1R,2S,3S,4R)-rel-1,2,3,4-Tetrahydro-benz[a]anthracene-1,2,3,4-tetrol, , Solvent-, Unit , # of units-, Cas.no. 78326-53-1 (Unspecific sterochemistry) Price on request 0318.20-200-T 13(H)-Dibenzo[a,i]carbazole, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 239-64-5 Price on request 41121 EPA Method 624 Standard Price on request