Nitrite as N standard

PCB Congeners & Hexachlorobenzene Mix #4

Dibenz[c,h]acridine, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 224-53-3

1H,1H-Perfluoro-3,7-dimethyloctan-1-ol , 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 232587-50-7