13C6-Tolfenamic acid, 10mg

2,4’-DDD, 1000µg/ml in Hexane, 1ml

Ethion, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 563-12-2

Ethanol standard in serum,0.5g/L,serum, 3mL