Levonorgestrel, 100µg/mL in Acetonitrile, 1ml

Perfluoro-3,5,5-trimethylhexanoic acid, 1.2ml x 50ug/ml, methanol

Propachlor ESA sodium salt, 100µg/ml in MeOH, 1ml

Bisphenol S, 100µg/ml in Acetonitrile, 1ml