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1:20 v/v means 1 ml in 20 ml Set up a ratio and proportion problem as follows: 50 ml answer 1 ml 20 ml 1,000 ml X X I ml X 1 , 000 20 ml 242 Be especially careful to choose the correct strength for drugs with strengths expressed in ratios. For example, epinephrine is available in 1:1,000 strength and strength Pharmacy Calculations ................
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