Metribuzin DA, 10μg/ml in Acetonitrile, 10ml

Para-phenylenediamine,100 µg/mL,acetonitrile,1mL,

3,3',4,4',5-Pentachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

Natamycin, 50mg