Glossary entry

Spanish term or phrase:

μmol o μmole

English translation:

μmol (same unit : mol is the SI abbreviation of mole)

Added to glossary by Charles Davis
Jan 18, 2019 12:26
5 yrs ago
7 viewers *
Spanish term

μmol o μmole

Spanish to English Science Chemistry; Chem Sci/Eng unidad de medida
Hola colegas, quería saber si existe una diferencia respecto de estas unidades y cuándo se emplea cada una

the amount of enzyme required to hydrolyze 1 μmole of heparin disaccharide substrate per hour under the specified assay conditions

la cantidad de enzima necesaria para hidrolizar 1 μmol de sustrato disacárido de heparina por hora, según las condiciones específicas de la determinación

Estuve buscando rato en varios sitios pero no doy con ninguno que explique específicamente esto.
Change log

Feb 1, 2019 08:18: Charles Davis Created KOG entry

Proposed translations

+6
8 mins
Selected

No difference : mol is the (SI) abbreviation of mole

And of course μmol is the SI abbreviation of μmole, a micromole (a millionth of a mole). I admit it hardly seems worth abbreviating, but there it is.

A mole, for the record, is one of the seven SI base units. It's the unit of measurement for amount of substance.
https://en.wikipedia.org/wiki/Mole_(unit)

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Note added at 12 mins (2019-01-18 12:38:44 GMT)
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In Spanish the issue doesn't arise, because a mole un called a "mol" in Spanish anyway, so the SI abbreviation and the name of the unit are the same: it will always be μmol. Same in German. There's only a difference in English (and, for example, French and Italian).
Peer comment(s):

agree Rachel Fell
34 mins
Thanks, Rachel :-)
agree Chema Nieto Castañón : Perfectamente explicado. Tanto en inglés como en castellano la forma habitual de expresarlo es como μmol. // Lo de incorrecto no lo tengo tan claro, aunque lo será. No obstante, y dado que aparece así en numerosos textos, tu respuesta es muy clara.
1 hr
Muchas gracias, Chema :-) Como ha señalado John, "μmole" es en realidad incorrecto, a pesar de ser tan frecuente: debe ser "μmol", y la forma no abreviada sería "micromole".
agree Mohamed Anwar
1 hr
Thanks, Mohamed :-)
agree Blacjak : We came up with the same answer at the same time. :)
1 hr
Thanks a lot, Blackjak :-) It happens all the time.
agree Neil Ashby : As a chemist it actually seems weird to see "µmole" I'm so used to just good old "µmol, mmol, mol" etc. It's something we use as a unit all the time, but rarely as a word./Not just preference, as John mentions it's the only correct abbn., e.g. not kmetre!
2 hrs
Many thanks, Neil ;-) Good to have your view here. It seems pretty clear that µmol should be used for preference. As long as we're clear that a mol is a mole: one unit, not two :-)
agree Debora Blake
6 hrs
Thanks, Debora :-)
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4 KudoZ points awarded for this answer. Comment: "Selected automatically based on peer agreement."
+1
28 mins

μmol

With all respect to the other answerers, I don’t think they are interchangeable, but it is a mistake even chemists make. The unit is the mole and it is abbreviated to mol. The prefix μ represents micro. So μmol is an abbreviation for micromoles. Think of the analogy of kilometres or millimetres; the respective abbreviated prefixes are k and m for kilo or milli. You would get strange looks for writing mmetres or kmetres.
Peer comment(s):

agree Charles Davis : True; "μmole" is incorrect, and this is worth noting. And you're right that it's a common mistake: there are many professional texts (scientific papers and books) online containing "μmole" (though many more with "μmol", of course).
24 mins
disagree Blacjak : The question was asking if there was a difference between μmol and μmole and when each was used. He was not asking which one was a better translation. As you, yourself state: They are used interchangeably in the literature (correct or not).
1 hr
agree raptisi
1 day 7 mins
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13 mins

μmol or μmole

μmol es la abreviatura de μmole así como mol es la abreviatura de mole

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Note added at 1 hr (2019-01-18 14:10:04 GMT)
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Para mayor claridad, "μmol" es el símbolo oficial del SI.
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