Heptachlor endo-epoxide, 100 µg/ml, Methanol, 1m

Chlormequat-1,1,2,2-d4 chloride, 100µg/ml in Water, 1ml

Isazofos, 10.0 µg/ml, Ethyl acetate, 10ml

4-(Methylsulfonyl)-2-nitrobenzoic acid, 100mg