Dimethachlor (Teridox), 1000µg/ml in MeOH, 1ml

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

Ammonia as (NH4+)

2-Nitronaphthalene, 100µg/ml in Acetonitrile, 5ml