Methylmalonic acid, 100 µg/ml, Acetonitrile, 1ml

Hydroxychloroquine sulfate,1000 µg base/mL,MeOH,1mL,

1H,1H,2H,2H-Perfluorododecyl acetate, 1.2ml x 50ug/ml, isooctane

Pentachlorobenzene, 100µg/ml in CY, 1ml