EPA Method 525.2 - 526 Internal Standard Back Catalog number: 91297 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 82477 Gas-Liquid Partitioning Surrogates - Method 8261 Price on request 79197 2,4,5-T Price on request KBIO-EBGP-15ML Pure ß-Glucuronidase from overexpressing recombinant E. coli ,>50,000 u/ml,50% aqueous glycerol soln,5mL Price on request