n-Hexane, 1000µg/ml in MeOH, 1ml

Phenyltin Chloride Stand, 2000µg/ml in MeChl, 1ml

Nitrite (NO2-) as N, 100µg/ml in Water, 100ml

Hydrochlorothiazide,1000 µg/mL,MeOH,1mL,