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One part per hundred thousand, per cent mille (pcm) or milli-percent denotes one part per 100,000 (10 5) parts, and a value of 10 −5. It is commonly used in epidemiology for mortality, crime and disease prevalence rates, and nuclear reactor engineering as a unit of reactivity.
In UK insurance usage, the cost per mille is the rate per £1000 of insured value. [10] ... Average marine salinity is about 35 parts per thousand or 35‰ (3.5%).
Various ways of expressing fineness have been used and two remain in common use: millesimal fineness expressed in units of parts per 1,000 [1] and karats or carats used only for gold. Karats measure the parts per 24, so that 18 karat = 18 ⁄ 24 = 75% and 24 karat gold is considered 100% gold.
A related concept is one part per ten thousand, 1 / 10,000 .The same unit is also (rarely) called a permyriad, literally meaning "for (every) myriad (ten thousand)". [4] [5] If used interchangeably with basis point, the permyriad is potentially confusing because an increase of one basis point to a 10 basis point value is generally understood to mean an increase to 11 basis points; not ...
The salt concentration is usually expressed in parts per thousand (permille, ‰) and parts per million (ppm). The USGS salinity scale defines three levels of saline water. The USGS salinity scale defines three levels of saline water.
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Foraminifera samples. In geochemistry, paleoclimatology, and paleoceanography δ 13 C (pronounced "delta thirteen c") is an isotopic signature, a measure of the ratio of the two stable isotopes of carbon— 13 C and 12 C—reported in parts per thousand (per mil, ‰). [1]
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