Table of Contents
What is grain amount?
grain, unit of weight equal to 0.065 gram, or 1/7,000 pound avoirdupois. One of the earliest units of common measure and the smallest, it is a uniform unit in the avoirdupois, apothecaries’, and troy systems.
What is an apothecary grain?
The apothecaries’ grain is equal to the troy and avoirdupois grains and represents 1/5,760 part of the troy and apothecaries’ pound and 1/7,000 part of the avoirdupois pound. Apothecaries’ weight was used in the United States until 1971, when it was replaced by the metric system.
How much is a grain nursing?
As mentioned earlier, 1 grain equals approximately 65 mg.
What medications are measured in grains?
Though no longer recommended, in the U. S. grains are still used occasionally in medicine as part of the apothecaries’ system, especially in prescriptions for older medicines such as aspirin or phenobarbital. For example, the dosage of a standard 325 mg tablet of aspirin is sometimes given as 5 grains.
How many drams are in an ounce apothecary?
eight drams
The apothecary system, originated as the system of weights and measures for dispensing and prescribing medications. The English version divided a pound into 12 ounces, an ounce into eight drams/drachms, and a dram into three scruples or 60 grains.
How many milligrams are in a grain of grain?
No Ads. A grain (symbol: gr) is a unit of mass now equal to exactly 64.79891 milligrams, in all English mass and weight systems (avoirdupois, Apothecaries’ and troy).
How many grains are in a tablet of aspirin?
For example, the dosage of a standard 325 mg tablet of aspirin is sometimes given as 5 grains. In that example the grain is approximated to 65 mg, though the grain can also be approximated to 60 mg, depending on the medication and manufacturer. The apothecaries’ system has its own system of notation,…
How many grains are in a troy ounce?
A grain (symbol: gr) is a unit of mass now equal to exactly 64.79891 milligrams, in all English mass and weight systems (avoirdupois, Apothecaries’ and troy). An avoirdupois ounce is equal to 437.5 grains, whereas a troy ounce is equal to 480 grains.
How many grains are in an ounce of avoirdupois?
An avoirdupois ounce is equal to 437.5 grains, whereas a troy ounce is equal to 480 grains. With the differing number of ounces in their respective pounds, an avoirdupois pound is 7,000 grains, whereas a troy pound is 5,760 grains.