EPA Method 8260B Surrogate Standard Back Catalog number: 23004 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 90128 Aroclor 1254 Price on request 73191 1,3-Propanediol Price on request 2691.34-10UG 17ß(H),21 alpha(H)-(22R)-Tetrakishomohopane , neat, Solvent-neat, Unit ca. 10µg , # of units-1, Cas.no. 79951-54-5 Price on request