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The resulting 'Knudsen salinities' are expressed in units of parts per thousand (ppt or ‰). The use of electrical conductivity measurements to estimate the ionic content of seawater led to the development of the scale called the practical salinity scale 1978 (PSS-78). [9] [10] Salinities measured using PSS-78 do not have units.
The "practical salinity unit" is effectively not motivated in the article since it completely lacks any reference to physical salinity. The statement "It is not the case that a salinity of 35 exactly equals 35 grams of salt per liter of solution." only says that PSU is not equal to grams per liter.
The tun (Old English: tunne, Latin: tunellus, Middle Latin: tunna) is an English unit of liquid volume (not weight), used for measuring wine, oil or honey. It is typically a large vat or vessel, most often holding 252 wine gallons, but occasionally other sizes (e.g. 256, 240 and 208 gallons) were also used. [1]
A salinometer. A salinometer is a device designed to measure the salinity, or dissolved salt content, of a solution.. Since the salinity affects both the electrical conductivity and the specific gravity of a solution, a salinometer often consist of an ec meter or hydrometer and some means of converting those readings to a salinity reading.
where TDS is expressed in mg/L and EC is the electrical conductivity in microsiemens per centimeter at 25 °C. The conversion factor k e varies between 0.55 and 0.8. [5] Some TDS meters use an electrical conductivity measurement to the ppm using the above formula. Regarding units, 1 ppm indicates 1 mg of dissolved solids per 1,000 g of water. [6]
Standard Bottle for wine and spirits. Litre: 33.8: 1 L: 1 + 1 ⁄ 3: Popular size for wines introduced by Austrian Grüner Veltliner wine producers in the late 1990s. [25] Also used by German, Chilean and American producers since the late 2000s. Magnum: 50.7: 1.5 L: 2: Marie Jeanne: 76: 2.25 L: 3: Bordeaux region. Usually used for a Claret wine ...
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It is therefore not possible to make an exact conversion between these units. Representative figures for the amount of grapes needed for 100 L of wine are 160 kg for white wine, 130 kg for red wine, and 140 kg for a mixture of red and white wine. [1] Thus: [2] for white wine, 100 hl/ha ≈ 16,000 kg/ha (16 t/ha) = 6.5 tons per acre.