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1 ⁄ 2 tsp [23] 1 ⁄ 16: 2 coffeespoons = 1 teaspoon teaspoon (kitchen spoon, splash) tsp. or t. 1 fluid dram or 5 mL [10] most common size: 80 minims or 3 mL [17] 1 fluidrachm or 4 mL, [11] or 3.75 mL [18] (actual range: 4.6–5.5 mL [12]) 1 ⁄ 3 tablespoon or 1 ⁄ 6 fl oz 1 fl dram or 5 mL, [13] 1 ⁄ 6 fl oz, [15] 1 1 ⁄ 3 fl dr 1 ⁄ 8 ...
These cutlery spoons are also called a "teaspoon" and "tablespoon", but are not necessarily the same volume as measuring spoons with the same names: Cutlery spoons are not made to standard sizes and may hold 2.5~7.3 ml (50%~146% of 5 ml) for teaspoons [3] and 7~20 ml (47%~133% of 15 ml) for tablespoons. The difference in size can be dangerous ...
The post-1824 (British) imperial Apothecaries' dessert-spoon was also 1 / 4 fluid ounce, but the ounce in question was 1 / 160 of an imperial gallon, approximately 277.4 cubic inches, yielding a dessert-spoon of approximately 7.10 ml. [6]
In the 18th century, the table-spoon became an unofficial unit of the apothecaries' system of measures, equal to 4 drams ( 1 / 2 fl oz, 14.8 ml). It was more commonly known by the Latin name cochleare majus (abbreviated cochl. maj.) or, in apothecaries' notation, f℥ss or f℥ß (fluid ℥, i.e. ounce, semis, one-half).
A teaspoon (tsp.) is a small spoon that can be used to stir a cup of tea or coffee, or as a tool for measuring volume. [1] [2] The size of teaspoons ranges from about 2.5 to 7.3mL (about 0·088 to 0·257 imperial fluid ounce or 0·085 to 0·247 US fluid ounce).
* In the UK, teaspoons and tablespoons are formally 1 / 160 and 1 / 40 of an imperial pint (3·55 mL and 14·21 mL), respectively. In Canada, a teaspoon is historically 1 ⁄ 6 imperial fluid ounce (4.74 mL) and a tablespoon is 1 ⁄ 2 imperial fl oz (14.21 mL).
1 UK pinch = 1 / 16 UK tablespoon = 1 / 8 UK dessert spoon = 1 / 4 UK teaspoon = 1 / 2 UK salt spoon: ≈ 0·06: US customary tablespoon: ≈ 0·09: US customary dessert spoon: ≈ 0·18: US customary teaspoon: ≈ 0·36: US customary coffee spoon ≈ 0·72: US customary salt spoon ≈ 1·44: US customary dashes ...
This is equal to about 61.6 μL (U.S.) or 59.2 μL (Britain). 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.