Phenols Mix #1

2-(4-Chloro-2-methylphenoxy-d3)propionic acid, 100µg/ml in MeOH, 1ml

Fipronil-sulfone, 100 ng/µl, 1ml

1,3,7,8-Tetrachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene