单词 | pipette |
释义 | pipetten.ΘΚΠ society > leisure > the arts > music > musical instrument > wind instrument > pipe > [noun] > other pipes pipette?a1475 nightingale pipe1626 Picco pipe1856 ocarina1877 ?a1475 Promptorium Parvulorum (Winch.) (1908) 337 Pypet, fistula. 2. Science. A slender tube of small calibre used for obtaining a known small volume of a liquid, esp. in laboratory work, and often incorporating a swollen central reservoir. Also: = Pasteur pipette n. at Pasteur n. 3.With the traditional manual glass pipette, the liquid is drawn up to a calibration mark either by mouth suction or by squeezing and then releasing a rubber bulb. There are also pipettes with varying degrees of automation that can draw up a preset quantity of liquid.explosion, Knudsen, Pasteur pipette: see the first element. ΘΚΠ the world > matter > chemistry > equipment or apparatus > [noun] > miscellaneous apparatus bain1477 speculum1650 filtering paper1651 wheel-fire1662 filter paper1670 sun furnace1763 respirator1789 candle-ball1794 rectifier1822 candle-bomb1823 filter1823 oxyhydrogen blowpipe1823 shade1837 graduator1839 pipette1839 thistle funnel1849 pressure tube1852 ozonizer1858 dialyser1861 Liebig condenser1861 Sprengel pump1866 Sprengel tube1866 water softener1867 mercury pump1869 Bunsen burner1870 dialysator1877 test-mixer1877 tube-condenser1877 Kipp1879 reflux condenser1880 policeman1888 converter1889 pressure boiler1891 spot plate1896 hydrogen electrode1898 sampler1902 reactor1903 fume-chamber1905 Permutit1910 microburner1911 salt bridge1915 precipitator1919 Raschig ring1920 microneedle1921 titrator1928 laboratory coatc1936 spray tower1937 precipitron1938 ion exchanger1941 potentiostat1942 chemostat1950 Knudsen pipette1951 pH-stat1956 cryopump1958 society > occupation and work > equipment > conveyor > [noun] > conduit, channel, or tube > pipe > other types of pipe swan-pen1426 service pipe1718 standpipe1728 service1786 jet pipe1795 safety tube1803 gas pipe1807 outlet pipe1837 pipette1839 downpipe1846 nipple1863 downcomer1868 downcome1872 wyea1877 benda1884 Y brancha1884 gas line1887 sparge pipe1910 riser1962 marine riser1972 1839 A. Ure Dict. Arts 68 We readily obtain a volume of 100 cubic centimetres by means of a pipette. 1840 J. F. W. Herschel in Philos. Trans. (Royal Soc.) 130 12 On pouring over this, cautiously by means of a pipette, a solution of hyposulphite of soda, it was restored. 1860 Jrnl. Soc. Arts 8 324/1 By means of a graduated pipette I took a thousandth part containing..one thousandth of a grain of arsenious acid. 1884 Times 27 Oct. 4/2 A ‘pipette’ is..a glass tube with a..swelling about one-third up from its lower end. 1937 W. C. Pierce & E. L. Haenisch Quantitative Anal. v. 49 In all pipets the flow of liquid is controlled by admission of air beneath a finger pressed tightly onto the upper end of the stem. 1961 G. R. Choppin Exper. Nucl. Chem. ix. 133 When the preparation is complete, carefully remove as much of the supernate as possible with a transfer pipet and place on a planchet. 1996 Independent 12 Dec. i. 3/3 With the very old vinegar the flavour is such that you almost need to use a pipette for it. ΚΠ 1890 Cent. Dict. Pipette, in porcelain-making, a small can arranged to hold slip, and to allow it to flow through a pipe at one end. Compounds pipette bulb n. ΚΠ 1877 J. Tyndall in Philos. Trans. (Royal Soc.) 167 153 I have called them pipette-bulbs because they are formed by hermetically sealing one shank of a pipette, close to the bulb. 1995 Internat. Jrnl. Plant Sci. 156 335/1 Liquids are transferred into and removed from the centrifuge tube by means of sterile Pasteur pipettes and pipette bulbs. pipette shank n. ΚΠ 1877 J. Tyndall in Philos. Trans. (Royal Soc.) 167 171 The pipette-shank in this case was found entirely emptied of its liquid and filled with air. 1996 Science 21 June 1782/2 The pipette shanks were treated with Sigmacote. pipette stopper n. ΚΠ 1885 Proc. Royal Soc. 39 267 By means of the pipette stopper one or two drops spotted on to the surface of the glass cell. 2002 Design News (Nexis) 8 July 74 Potential applications include syringe plunger tips and seals, vial and pipette stoppers. This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022). pipettev. Science. transitive. To draw (off) by means of a pipette; to transfer (into) by means of a pipette. ΘΚΠ the world > movement > transference > [verb (transitive)] > convey or transport > convey by a channel or medium > through a pipette pipette1890 1856 Proc. Royal Soc. 1854–5 7 137 A sufficient quantity of carbonate of soda was next added to neutralize the free acid, and the liquid pipetted from the water. 1887 Amer. Chem. Jrnl. 9 177 The solution of arsenic acid was pipetted into the bottle. 1890 J. Cagney tr. R. von Jaksch Clin. Diagnosis iv. 84 The æther is pipetted or siphoned off. 1961 G. R. Choppin Exper. Nucl. Chem. ix. 132 Pipet approximately 10,000 cpm of Cs137 activity into a small test tube. 1975 Nature 13 Mar. 151/2 The blood was cooled..and the plasma was pipetted off for enzyme analysis. 1997 Spy (N.Y.) Aug. 40/2 If you handed a traditional scientist a bunny, he would have removed half its skull and be pipetting shower-gel into its eye. This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022). < n.?a1475v.1856 |
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