EPA Method 8240A/1666 - Purgeable Internal Std

(6)Helicene, racemic mixture of two enantiomers, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 187-83-7

N-Nitroso-N-methylurea, 500µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 684-93-5

Daimuron, 100 µg/ml, Acetonitrile, 1ml