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Question:

What is the smallest unit of weight that can be measured using a Class A prescription balance?

A 6 mg
explanation

A Class A prescription balance uses brass weights to measure ingredients down to 6 mg increments. The balance uses a counterweight system to determine the specific weight of solid ingredients.

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Related Questions

Which of the following dosage forms is not an example of a sustained-release dosage form?

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A pastille, also known as a lozenge or a troche, is a solid dosage forms with flavoring that dis- solve in the mouth. A pastille is not a sustained- released dosage form.

A filter needle is required when withdrawing solution from which of these?

an ampule

A filter needle is required when withdrawing solution from an ampule to prevent any glass particles from contaminating the contents of the syringe. A regular needle is then used to inject the contents into the IV bag.

Which of the following is an example of an electrolyte that may be used in a TPN?

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Examples of additives that may be added to a TPN include potassium chloride (KCl), potassium phosphate (KPO3), calcium gluconate (Ca gluconate), magnesium sulfate (MgSO4), sodium phosphate (NaPO4), sodium chloride (NaCl), multivitamin (MVI), multiple trace elements (MTEs), and zinc (Zn).

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The USP has classified containers as follows: a single-dose container is a single-unit container in- tended for parenteral use, a tight container protects the product from contamination, a single- unit container is designed to hold a quantity of drug product intended for administration as a single dose after the container is opened, and a unit-dose container is a single container intended for administration other than by the parenteral route as a single drug directly from the container.

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2. Covering the ampule with an alcohol swab, grip the top of the ampule and bottom of the ampule with the thumb and index finger of each hand (one hand on top, the other on the bottom).
3. With a quick motion, snap the ampule at the neck being careful not to break it toward the HEPA filter (break toward the side of the hood).

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A reconstituted product should contain a “Shake Well” label to ensure the medication is mixed thoroughly before administering it.

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A sublingual tablet is not a delayed-release dosage form. Sublingual tablets are taken so that the therapeutic effect will occur quickly.

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How many milliliters of a 30% solution and a 10% solution are needed to make 800 ml of 25% solution?

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Use the allegation method and a chart like this. Chart filled in for this problem:
1. Number of parts for higher % solution = Desired % in final product - lower % solution: 25 - 10 = 15
2. Number of parts for lower % solution = Higher % solution - Desired % in final product: 30 - 25 = 5
3. Add the number of parts together to get a total number of parts: 15 + 5 = 20 total parts
4. Divide the final volume of the desired product by the total number of parts to get ml/part: 800/20 parts = 40 ml/part
5. Multiply the number of parts for each % solution by the ml/part to get the volume of each solution you need to add together to get the desired final product.
40 ml/part x 15 parts = 600 ml of 30% solution 40 ml/part x 5 parts = 200 ml of 10% solution