Nitrite (NO2-) as N

2,3',4,5,5'-Pentachlorobiphenyl,100 µg/mL,isooctane,1mL,

4-Methyl-2-pentanone

2,3,6,7-Tetrachloro(13C10)naphthalene, 1.2mL x 50ug/mL, nonane