Perchlorate Level 4

EPA Method 8240A - Purgeable Surr Std

1,3-Dimethyl-2-(3,7-dimethyloctyl)cyclohexane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 19550-61-9

O-Desmethylvenlafaxine, 100µg/ml in AL, 1ml