Silica (SiO2), 1000µg/ml in Water/0.5% NaOH, 100ml

3-Nitrofluoranthene-d9, 100µg/ml in Toluene, 1ml

(±)-Albuterol-d3 (3-hydroxymethyl-d2; alpha-d1),1000 µg/mL,MeOH,1mL,

Roxithromycin, 100 µg/ml, Methanol, 1ml