Harman-13C2,15N, 1mg

Methyl-4-hydroxybenzoate, 1000µg/ml in MeOH, 1ml

1,2,3,4,6,8,9-Heptachloro[13C12]dibenzofuran, 1.2ml x 1ug/ml, nonane

Sebuthylazine, 100μg/mL in Acetonitrile, 1ml