2-hydroxy-3-methylpentanoic acid, >95%, 50mg

Trimethyl phosphate, 100 µg/ml, Methanol, 5ml

1,2,3-Trichlorodibenzo-p-dioxin,50 µg/mL,n-nonane,1mL,

Volatile Mix, 200µg/ml in MeOH, 1ml