4-Nitrophenol, 100 µg/ml, Methanol, 5ml

Chloroparaffin C14-C17, 42% Cl, 100µg/ml in CY, 10ml

Diazepam-d5, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 65854-76-4

EPA Method 300.0 Anions Mix A, 1000 µg/mL in Water, 1ml