Ammonia as (NH4+)

Fenamiphos-sulfone, 100 µg/ml, Toluene, 5ml

4,4'-DDE, 100µg/mL, Solvent-dichloromethane, Unit 1mL, # of units-1, Cas.no. 72-55-9

Unleaded Gasoline with Certified Content of BTEX, 10000µg/ml in MeOH, 1ml