15N3-Atrazine, 100 µg/ml, Acetonitrile, 1ml

4-Methyl-1H-benzotriazole, 10mg

Metsulfuron-methyl, 10 µg/ml, Acetonitrile, 10ml

Bis(4-hydroxyphenyl) Sulfone (d4major), 2,5mg (Bisphenol S-d4)