EPA Method 525 Spike C

6-Heptyldecahydronaphthalene-2-carboxylic acid, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 82743-34-8

Sodium p-n-tridecylbenzenesulfonate, 10mg

Chlorpyrifos, 100µg/mL in MeOH, 1ml