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Pharmacists have since moved to metric measurements, with a drop being rounded to exactly 0.05 mL (50 μL, that is, 20 drops per milliliter). In hospitals, intravenous tubing is used to deliver medication in drops of various sizes ranging from 10 drops/mL to 60 drops/mL.
Cooking weights and measures. Measuring spoons (metric) – 1 mL, 5 mL, 15 mL, 50 mL, 100 mL, 125 mL. Measuring spoons (customary units) In recipes, quantities of ingredients may be specified by mass (commonly called weight), by volume, or by count . For most of history, most cookbooks did not specify quantities precisely, instead talking of "a ...
The apothecaries' system, or apothecaries' weights and measures, is a historical system of mass and volume units that were used by physicians and apothecaries for medical prescriptions and also sometimes by scientists. [ 1][ 2][ 3] The English version of the system is closely related to the English troy system of weights, the pound and grain ...
Length. For measuring length, the U.S. customary system uses the inch, foot, yard, and mile, which are the only four customary length measurements in everyday use. From 1893, the foot was legally defined as exactly 1200⁄3937 m (approximately 0.304 8006 m ). [13] Since July 1, 1959, the units of length have been defined on the basis of 1 yd ...
gyllot (about equal to 1/2 gill) noggin (1/4 pint) [8] nipperkin (measure for liquor, containing no more than 1/2 pint) tumblerful (10 fl oz or 2 gills or 2 teacupsful) apothecaries' approximate measures [9] teacupful = about 4 fl oz. wineglassful = about 2 fl oz. tablespoonful = about 1/2 fl oz. dessertspoonful = about 2 fl dr.
The baker has determined how much a recipe's ingredients weigh, and uses uniform decimal weight units. All ingredient weights are divided by the flour weight to obtain a ratio, then the ratio is multiplied by 100% to yield the baker's percentage for that ingredient:
The units of cubic length (the cubic inch, cubic foot, cubic mile, etc.) are the same in the imperial and US customary systems, but they differ in their specific units of volume (the bushel, gallon, fluid ounce, etc.). The US customary system has one set of units for fluids and another set for dry goods. The imperial system has only one set ...
Changes in viral load are usually reported as a log change (in powers of 10). For example, a three log increase in viral load (3 log10) is an increase of 10 3 or 1,000 times the previously reported level, while a drop from 500,000 to 500 copies would be a three-log-drop (also 3 log10). [citation needed]