Nitrite (NO2-) as N

2,2',4,4',5,6'-Hexachlorobiphenyl ,100 µg/mL,isooctane,1mL,

Sodium p-n-dodecylbenzenesulfonate, 1000µg/mL in MeOH, 1ml

1-Ethyl-4-fluorobenzene, neat, Solvent-neat, Unit 0,5mL, # of units-1, Cas.no. 459-47-2