PhyPharQ1Prelims

I. Class B Prescription Balance can load 10g in each pan II. A prescription balance is a scale or balance adapted to weighing medicinal and other substances required in prescriptions or in other pharmaceutical compounding.

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I. Class B Prescription Balance has a maximum maintenance sensitivity reciprocal of about 6mg or less without load II. Weigh amounts approximately 120mg to 60 grams

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I. Class B can weigh more than 649mg II. Torsion balance utilizes both internal and external weights

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I. the advantages of calibrating your balance is to obtain accurate measurements II. Safe to use

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I. Sensitivity reciprocal is a change of load required to produce a unit change displacement of one index platter in the rest point of the indicator II. There is an inequality in the arms of the balance if after adding the weight to correct, the division is not yet equal.

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I. Shift test is designed to check the arm and level components of the product II. Arm ratio test shifts the different weights to check if all sides of the pan will give an equal deviation

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I. Meniscus is the curved upper surface of a column of a liquid close to the surface of the container caused by surface tension II. For clear liquids, read the upper meniscus

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I. Cohesion is an attraction between unlike molecules II. Adhesion is the intermolecular attraction between unlike molecules

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I. Convex meniscus example is the mercury in a thermometer II. Concave meniscus is defined as molecules of the liquid having stronger attraction to the container

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I.Increase in viscosity can decrease drop size II. Increase in density can increase drop size

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