Endosulfan sulphate

2-Perfluorooctyl ethanoic acid (8:2), 50µg/ml in Isopropanol, 1,2ml

iso-Butyl 4-hydroxybenzoate-2,3,5,6-d4, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 1219805-33-0

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