Lambda (written λ, in lowercase) is a non-SI unit of volume equal to 10−9 m3, 1 cubic millimetre (mm3) or 1 microlitre (μL). Introduced by the BIPM in 1880,[1] the lambda has been used in chemistry[2] and in law for measuring volume, but its use is not recommended.[3]
lambda | |
---|---|
Unit system | Non-SI metric unit |
Unit of | Volume |
Symbol | λ |
Conversions | |
1 λ in ... | ... is equal to ... |
SI base units | 10−9 m3 |
Units accepted for use with SI | 1 μL |
This use of λ parallels the pre-SI use of μ on its own for a micrometre and γ for a microgram.[4][5] Although the use of λ is deprecated, some clinical laboratories continue to use it.[6] The standard abbreviation μL for a microlitre has the disadvantage that it can be misread as mL (a unit 1000 times larger). In pharmaceutical use, no abbreviation for a microlitre is considered safe. The recommended practice is to write "microlitre" in full.[7]
References
edit- ^ Donald Fenna (2002), A Dictionary of Weights, Measures, and Units, Oxford University Press, ISBN 0198605226, p. 153.
- ^ "Units: L". University of North Carolina. Retrieved 2015-03-28.
- ^ Carl A. Burtis and David E. BrunsTietz (2014), Fundamentals of Clinical Chemistry and Molecular Diagnostics, 7th ed., Elsevier Health Sciences, ISBN 0323292062, p. 114.
- ^ Lela Buckingham (2014), Fundamental Laboratory Mathematics: Required Calculations for the Medical Laboratory Professional, F. A. Davis, ISBN 0803641028, p. 48.
- ^ I. P. Alimarin and M. N. Petrikova (2013), Inorganic Ultramicroanalysis, Elsevier, ISBN 1483150488, p. xiv.
- ^ Barbara H. Estridge, Anna P. Reynolds, and Norma J. Walters (2000), Basic Medical Laboratory Techniques, 4th ed., Cengage Learning, ISBN 0766812065, p. 32.
- ^ Chris Langley and Yvonne Perrie (2014), Maths Skills for Pharmacy: Unlocking Pharmaceutical Calculations, Oxford University Press, ISBN 019968071X, p. 55.
🔥 Top keywords: Akademia e Shkencave e RPS te ShqiperiseAlexandria Ocasio-CortezBilderberg GroupCristiano RonaldoDong XiaowanMinecraftOperation GladioPrimal cutRiot FestStrictly Come Dancing (series 7)Main PageSpecial:SearchUEFA Euro 2024Wikipedia:Featured picturesJulian AssangeShifty ShellshockFlorida PanthersList of Stanley Cup championsUEFA European ChampionshipPaul MauriceConnor McDavidMatthew TkachukCleopatraDeaths in 2024House of the Dragon2024 ICC Men's T20 World CupKeith Tkachuk2024 Copa AméricaCrazy TownStella AssangeChelsea ManningYouTubeElon MuskRoberto LuongoAnna Hall (athlete)ICC Men's T20 World CupMckenna GraceStanley CupJJ RedickConn Smythe Trophy.xxxInside Out 2Danny MakkelieZaheer IqbalAfghanistan national cricket teamMoney in the Bank (2024)Gordon Todd SkinnerProject 2025Dr Disrespect