Phosphate as (PO4-3), 1000µg/ml in water, 100ml

2,3,3',4,5,5'-Hexachloro-4'-methoxy[13C12]biphenyl, 1.2ml x 50ug/ml, toluene

Dibenzo-p-dioxin-d8,50 µg/mL,n-nonane,1mL,

Bisphenol B, 100µg/ml in MeOH, 5ml