4-Methyl-2-pentanone, 100µg/mL in MeOH, 1ml

2,3',4,4',5',6-Hexachlorobiphenyl ,100 µg/mL,isooctane,1mL,

N-Nitrosodiethanolamine

a-1,2,3,4,5,6-Hexachloro(13C6)cyclohexane, 1.2mL x 100ug/mL, nonane