Common Anions EPA 300A Mix

1-(3-Chloro-4-methylphenyl)-3-methylurea, 100µg/ml in Acetonitrile, 5ml

1,1,1,2-Tetrachloroethane, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 630-20-6

Oxalic Acid (C2H2O4)