Metolachlor (ring-13C6), 100µg/ml in n-Nonane, 1,2ml

β-1,2,5,6,9,10-Hexabromo[13C12]cyclododecane, 1.2ml x 50ug/ml, toluene

Boscalid (Nicob), 10.0µg/ml, Ethyl acetate, 10ml

Benzaldehyde, 1g