4,4'-DDT (ring-13C12,99%) 100 µg/mL in Nonane, 1,2ml

Ammonium (NH4+)

Arochlor 1232, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-10, Cas.no. 11141-16-5

EPA Method 525.2 Pesticide Mix #1, 100µg/mL in toluene : hexane [1:1], 1ml