EPA Method 524.3 - Internal Standard

O,O-Dimethylhydrogenphosphate-13C2 , sodium salt

1-Isopropylnaphthalene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 6158-45-8

Quaterrylene, neat, Solvent-neat, Unit ca. 10µg , # of units-1, Cas.no. 188-73-8