Metazachlor, 100 µg/ml, Ethyl acetate, 5ml

4-Methoxy-2',3',4',5'-tetrachlorobiphenyl, 100µg/ml in IO, 1ml

Caffeine-d9 (1,3,7-trimethyl-d9),neat,neat,10mg

9-Methylbenz[a]anthracene