Internal Standard Spiking Solution, 1.2ml, nonane

Benzo[a]pyrene, 10µg/mL, Solvent-acetonotrile, Unit 1mL, # of units-1, Cas.no. 50-32-8

Alachlor (ring 13C6), 100ug/ml in n-Nonane, 1,2ml

2,4-Dibromoanisole, 100mg