Metribuzin-desamino-desmethyl, 10mg

3,3'-Dimethyl-4,4'-diaminodiphenylmethane,100 µg/mL,acetonitrile,1mL,

OFN 2fg/uL in isooctane 3 x 1mL

5-Methyl-2,2',4,4'-tetrachlorodiphenylmethane