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Not sure what copies / mL means. Milliliter? The standardized abbreviation would be a small l. Here in Finland they use a N2 PCR test published by the CDC (don

Not sure what copies / mL means. Milliliter? The standardized abbreviation would be a small l. Here in Finland they use a N2 PCR test published by the CDC (don't ask me how that works, I am a software developer...). However, the results are presented in millions of RNA copies per 1000 inhabitants per 24 hours. I guess that leads to results unaffected by water consumption habits or rainfall (if the rains drains to the same system as household sewers, some location have dual systems). https://www.thl.fi/episeuranta/jatevesi/jatevesiseuranta_viikkoraportti.html https://www.thl.fi/episeuranta/jatevesi/jatevesiseuranta_vii...

1over137 5y ago
The standard abbreviation for litre is uppercase L.
- usr1106 5y ago
  Actually ISO mentions both. (Of course they don't define it because the standard unit would for volume would be m³.) So maybe usage really depends on country, I have lived and worked in several European countries, all of them use a small letter. https://web.archive.org/web/20170814094625/http://www.bipm.org/utils/common/pdf/si_brochure_8_en.pdf https://web.archive.org/web/20170814094625/http://www.bipm.o... The first random picture seems to confirm that in the US a capital L is used. https://murraybrand.com/wp-content/uploads/2015/07/crystal_organic_milk_lineup.jpg https://murraybrand.com/wp-content/uploads/2015/07/crystal_o...
  - schoen 5y ago
    Wikipedia says > Since 1979, the litre may exceptionally be written using either an uppercase "L" or a lowercase "l", a decision prompted by the similarity of the lowercase letter "l" to the numeral "1", especially with certain typefaces or English-style handwriting. The American NIST recommends that within the United States "L" be used rather than "l". In European measurement contexts I've sometimes seen ℓ (with a script l), but I'm not sure I've seen plain l. (However, I live in the U.S. and might not have as much exposure to European references to liters.)
    - usr1106 5y ago
      The rule is that units named by persons use a capital letter (Kelvin, Tesla, Newton, others use a small one (meter, gram). According to the rule liter was designated by a small l. In 1979 the capital L was recognized by SI (as non-SI unit), too. (I don't know whether the script form was recognized at the same time). According the German Wikipedia capital L is used mainly in English speaking countries. Which makes sense because in handwriting the American (not so sure about the British) digit 1 and small letter l cannot really be distinguished. So 1 liter written as 1 l would be hard to read. In Germany the digit 1 nearly unviversally has a rising stroke on the left in handwriting, so 1 l is not a problem. German Wikipedia says capital L is not used by ISO.
mlyle 5y ago
Re normalization: see this comment https://news.ycombinator.com/item?id=29468598 https://news.ycombinator.com/item?id=29468598

1over137 5y ago

The standard abbreviation for litre is uppercase L.

usr1106 5y ago
Actually ISO mentions both. (Of course they don't define it because the standard unit would for volume would be m³.) So maybe usage really depends on country, I have lived and worked in several European countries, all of them use a small letter. https://web.archive.org/web/20170814094625/http://www.bipm.org/utils/common/pdf/si_brochure_8_en.pdf https://web.archive.org/web/20170814094625/http://www.bipm.o... The first random picture seems to confirm that in the US a capital L is used. https://murraybrand.com/wp-content/uploads/2015/07/crystal_organic_milk_lineup.jpg https://murraybrand.com/wp-content/uploads/2015/07/crystal_o...
- schoen 5y ago
  Wikipedia says > Since 1979, the litre may exceptionally be written using either an uppercase "L" or a lowercase "l", a decision prompted by the similarity of the lowercase letter "l" to the numeral "1", especially with certain typefaces or English-style handwriting. The American NIST recommends that within the United States "L" be used rather than "l". In European measurement contexts I've sometimes seen ℓ (with a script l), but I'm not sure I've seen plain l. (However, I live in the U.S. and might not have as much exposure to European references to liters.)
  - usr1106 5y ago
    The rule is that units named by persons use a capital letter (Kelvin, Tesla, Newton, others use a small one (meter, gram). According to the rule liter was designated by a small l. In 1979 the capital L was recognized by SI (as non-SI unit), too. (I don't know whether the script form was recognized at the same time). According the German Wikipedia capital L is used mainly in English speaking countries. Which makes sense because in handwriting the American (not so sure about the British) digit 1 and small letter l cannot really be distinguished. So 1 liter written as 1 l would be hard to read. In Germany the digit 1 nearly unviversally has a rising stroke on the left in handwriting, so 1 l is not a problem. German Wikipedia says capital L is not used by ISO.

mlyle 5y ago

Re normalization: see this comment https://news.ycombinator.com/item?id=29468598 https://news.ycombinator.com/item?id=29468598