EPA Method 548 Calibration Solution

Di-n-pentyl phthalate-3,4,5,6-d4, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 358730-89-9

1,5-Diaminonaphthalene

3,4,4',5-Tetrachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane