![]() What is the a) the minimum weighable quantity (if necessary round up to the nearest 5 mg), b) the quantity of drug to be weighed (use a multiple factor of 35), c) the quantity of diluent required and d) the quantity of the aliquot containing the desired amount of drug?Īpproach: Preliminary step: Determine the MWQ for the balance. Step-3: Weigh an aliquot of the mixture that will provide desired quantity of the substance.Īnswer: 120 mg of aliquot contains 40 mg of atropine sulfate.Ī pharmacist needs to weigh 5 mg of a drug for a prescription on a balance with a SR of 6 mg and a maximum acceptable percentage error of 5 %. Step-2: Dilute with an inert substance to obtain a mixture.ġ20 mg is the smallest amount of drug that can be weight out.ģ60 g mixture – 120 mg of atropine sulfate = 240 mg of diluent.ĭilute 120 mg of atropine sulfate with 240 g of lactose to obtain a 360 g mixture. The minimum amount that can be weighed is 120 mg.Ĭhoose a multiple factor of 3 and weight out 40 X 3 = 120 mg of drug. The Gibco One Shot FBS 50 mL bottle is designed to significantly improve your results and solve myriad challenges slowing down your research. What should the sample aliquot and diluents volumes be How would you prepare 20 mL of a 1:400 dilution What is the. An aliquot-free solution to minimize contamination and save time. Step-1: Weigh out a measureable multiple of desired quantity of the drug. You are to prepare 5 mL of a 102 dilution. ![]()
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