Norflurazon, 100 µg/ml, Ethyl acetate, 5ml

2,4-Dinitrophenol-d3

2,4'-DDT-13C12,100 µg/mL,n-nonane,1mL,

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