Fenthion, 100 µg/ml, Toluene, 1ml

Chlorhexidine-d8 Dihydrochloride, 1mg

2,2',3,3',5,6,6'-Heptachlorobiphenyl,100 µg/mL,isooctane,1mL,

Perfluorodecylphosphonic acid, 50µg/ml in MeOH, 1,2ml