Huanta Province and Test tube: Difference between pages
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{{wiktionary|test tube}} |
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{{Infobox Province Peru |
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{{Infobox Laboratory equipment |
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|region = Ayacucho |
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|name = Test tube |
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|founded = |
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|image = Test tubes.jpg |
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|cofarms = COA Huanta Province in Ayacucho Region.png |
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|caption = Two small test tubes in a test tube rack |
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|province = Huanta<ref>[http://www.munihuanta.gob.pe/ Official web site of the Huanta Province]</ref> |
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|acronym = |
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|other_names = Culture tube |
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|elevation = 2628 |
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|uses = [[Chemical reaction]]s, [[Bodily Fluids / Semen Analasis]] |
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|pop = 89,300 |
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|inventor = |
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|manufacturer = |
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|area = 3,878.91 |
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|model = |
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|related = [[Vacutainer]]<br/>[[Boiling tube]]<br/>[[Centrifuge tube]] |
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|web = www.munihuanta.gob.pe |
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|map = [[Image:Location of the province Huanta in Ayacucho.svg|250px]] |
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|ubigeo = 0504 |
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|mayor = Edwin Alfredo Bustios Saavedra |
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}} |
}} |
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A '''test tube''', also known as a '''culture tube''', '''sample tube''', '''test flute''' or '''flaccid flute''', is a piece of [[laboratory glassware]] composed of a finger-like length of [[glass]] tubing, open at the top, with a rounded U-shaped bottom. Often, the top features a flared lip. This is to aid pouring of a liquid from the test tube to a [[beaker (glassware)|beaker]]. A distinction between test tube and culture tube is often made, calling a tube with a lip a test tube and one without a lip a culture tube. |
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==Construction and uses== |
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'''Huanta Province''' is one of eleven provinces in the [[Ayacucho region|Ayacucho region]] in [[Peru]]. |
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[[Image:tube mold.gif|thumb|200px|left|Eight cavity test tube mold courtesy of Lake Charles Manufacturing.]] |
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Test tubes are available in a multitude of lengths and widths to serve a varying number of needs. They are typically used by [[chemist]]s to retain multiple discrete samples of materials, usually liquids, during chemical procedures and experiments, and are designed to allow easy heating of these samples. Often, test tubes are constructed of expansion-resistant glasses such as [[Pyrex]], and can usually be held in a flame such as that produced by a [[bunsen burner]]. A [[boiling tube]] is, however, preferred when heating samples for any length of time. It is used to hold chemicals. |
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Test tubes made from plastics are formed using injection molding. Injection molding is a process in which plastic is heated and then injected, under pressure, into a test tube mold commonly made from metal.<ref>{{cite book|author= M. Jeremy Ashcraft, General Manager, Lake Charles Manufacturing| title=Test Tube Molding Process: A discussion on the molding of plastic test tubes|publisher=Lake Charles Manufacturing|date=2007|}}</ref> |
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==Location== |
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The Huanta province is the northern-most province in the region. |
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==Political division== |
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The province measures 3,878.91 square kilometres [[Square kilometre|km<sup>2</sup>]] and is divided into eight districts: |
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== |
== References == |
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* [[Huanta District|Huanta]] ([[Huanta|Huanta]]) |
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* [[Ayahuanco District|Ayahuanco]] ([[Viracochan|Viracochan]]) |
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* [[Huamanguilla District|Huamanguilla]] ([[Huamanguilla|Huamanguilla]]) |
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* [[Iguain District|Iguain]] ([[Macachacra|Macachacra]]) |
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* [[Luricocha District|Luricocha]] ([[Luricocha|Luricocha]]) |
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* [[Santillana District|Santillana]] ([[San José de Secce|San José de Secce]]) |
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* [[Sivia District|Sivia]] ([[Sivia|Sivia]]) |
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* [[Llochegua District|Llochegua]] ([[Llochegua|Llochegua]]) |
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==Capital== |
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The capital of the Huanta province is the city of [[Huanta]]. |
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==References== |
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<references/> |
<references/> |
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==External links== |
==External links== |
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* ARKive: [http://www.testtubesonline.com/PhotoGallery.asp?ProductCode=207%2D0011W image of 16×150 multi-color polypropylene test tubes] |
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* {{es}} [http://www.munihuanta.gob.pe/ Official web site of the Huanta Province] |
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{{Provinces of Ayacucho Region}} |
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{{Peru-geo-stub}} |
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{{Laboratory equipment}} |
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{{coord missing|Peru}} |
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[[Category: |
[[Category:Laboratory glassware]] |
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[[Category:Provinces of Peru]] |
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[[ar:أنبوب اختبار]] |
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[[es:Provincia de Huanta]] |
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[[bg:Епруветка]] |
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[[fr:Province de Huanta]] |
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[[ca:Tub d'assaig]] |
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[[ |
[[da:Reagensglas]] |
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[[de:Reagenzglas]] |
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[[pt:Huanta (província)]] |
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[[ |
[[es:Tubo de ensayo]] |
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[[fr:Tube à essai]] |
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[[hr:Epruveta]] |
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[[it:Provetta]] |
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[[hu:Kémcső]] |
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[[nl:Reageerbuis]] |
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[[ja:試験管]] |
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[[pl:Probówka]] |
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[[pt:Tubo de ensaio]] |
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[[ru:Пробирка]] |
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[[simple:Test tube]] |
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[[sr:Епрувета]] |
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[[fi:Koeputki]] |
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[[sv:Provrör]] |
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[[ta:சோதனைக் குழாய்]] |
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[[wa:Asprouvete]] |
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[[zh:试管]] |
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Revision as of 23:26, 12 October 2008
Look up test tube in Wiktionary, the free dictionary.
 Two small test tubes in a test tube rack | |
| Other names | Culture tube |
|---|---|
| Uses | Chemical reactions, Bodily Fluids / Semen Analasis |
| Related items | Vacutainer Boiling tube Centrifuge tube |
A test tube, also known as a culture tube, sample tube, test flute or flaccid flute, is a piece of laboratory glassware composed of a finger-like length of glass tubing, open at the top, with a rounded U-shaped bottom. Often, the top features a flared lip. This is to aid pouring of a liquid from the test tube to a beaker. A distinction between test tube and culture tube is often made, calling a tube with a lip a test tube and one without a lip a culture tube.
Construction and uses
Test tubes are available in a multitude of lengths and widths to serve a varying number of needs. They are typically used by chemists to retain multiple discrete samples of materials, usually liquids, during chemical procedures and experiments, and are designed to allow easy heating of these samples. Often, test tubes are constructed of expansion-resistant glasses such as Pyrex, and can usually be held in a flame such as that produced by a bunsen burner. A boiling tube is, however, preferred when heating samples for any length of time. It is used to hold chemicals.
Test tubes made from plastics are formed using injection molding. Injection molding is a process in which plastic is heated and then injected, under pressure, into a test tube mold commonly made from metal.[1]