EPA Method 602 - Surrogate Standard Back Catalog number: 19097 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended MDD-1378 1,3,7,8-Tetrachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene Price on request MA9061 1,413 µS/cm conductivity solution (230mL) Price on request 72209 Methotrexate Price on request