Ditalimfos, 100 µg/ml, Acetonitrile, 5ml

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

Phenol-PFB derivative

4-Hydroxysulfadiazine,100 µg/mL,MeOH,1mL,