EPA Method 8260B Surrogate Standard

2,3,3',5'-Tetrachlorobiphenyl ,100 µg/mL,isooctane,1mL,

Ethylamine

17 alpha(H),21ß(H)-(22S)-Tetrakishomohopane , neat, Solvent-neat, Unit ca. 10µg , # of units-1, Cas.no. 67069-13-0