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Household System

3 teaspoons = 1 tablespoon
2 tablespoons = 1 fluid ounce
8 fluid ounces = 1 cup
2 cups = 1 pint
2 pints = 1 quart
4 quarts = 1 gallon

Household to Metric

1 teaspoon = 5 mL
1 tablespoon = 15 mL
1 fluid oz = 30 mL
1 cup = 240 mL
2.2 pounds = 1 kg
1 grain = 60-65 mg

Apothecary Weights

20 grains = 1 scrupple
3 scruples = 1 dram
8 drams = 1 ounce
12 ounces = 1 pound

Apothecary Fluids

60 minims = 1 fluid dram
8 fluid drams = 1 fluid ounce
16 fluid ounces = 1 pint
2 pints = 1 quart = 32 fl oz
4 quarts = 1 gallon = 128 fl oz

International Units (IU)

measurement of a drug in terms of its action, not its physical weight

Milliequivalent (mEq)

measurement based on the number of grams of a drug in 1 mL of normal solution

Temperature Conversions

C = (F - 32) / 1.8
F = 1.8C + 32

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