EPA Method 8061A Matrix Spike Solution

7-Bromobenz[a]anthracene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 32795-84-9

Terbutryn-d5 (ethyl-d5), 100µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 1219804-47-3

Niobium (Nb)