EPA Method 525 - PCB Standard

n-Butyl 4-hydroxybenzoate-2,3,5,6-d4, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 1219798-67-0

4-Fluoroaniline

Paraoxon-ethyl, 10 µg/ml, Cyclohexane, 10ml