L-Serine

Isoproturon D6 (dimethyl D6), 1000µg/mL in Acetonitrile, 1ml

beta-Endosulfan-d4 (1,1,5,5-d4),100 µg/mL,n-nonane,1mL,

1,2,3,5-Tetrachlorobenzene, 100 µg/ml, Methanol,