Urban dust - Organic contaminants, 2g

Trifluoroacetic acid, 50µg/ml in MeOH, 1,2ml

5,5'-Difluoro-3,3',4,4'-tetrachlorobiphenyl, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no.

4-Nitrosopiperazin-2-one,neat,neat,10mg,