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Scientific equipment: Test tubes

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Phoebe Vergotis

on 2 October 2012

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Transcript of Scientific equipment: Test tubes

photo (cc) Malte Sörensen @ flickr By Phoebe Vergotis Test tubes A test tube (also known as a culture tube or sample tube) is a piece of laboratory equipment used to hold, mix or heat chemicals that could be dangerous. What is a "Test tube" When the idea of having a container to store chemicals in was thought of, only rich chemists like Antoine Lavoisier used them. He used different glass vessels, that could be described as test tubes, it was not till 1846 when the term test tubes was invented. The idea for test tubes In my opinion Test tubes have helped keep chemists more organized and let them mix or examine chemicals without the risk of hurting themselves by chemicals that are dangerous to the skin... My opinion in how have test tubes helped chemists there are special types of test tubes that are made to be heated safely with out them 'exploding', these are made from borosilicate glass, even though this special glass is resistant from 'thermal shock' there are safety issues, and there is special equipment that you will have to use like thermal gloves or safety goggles, the amount of liquid makes a change too so watch out! Heating test tubes Human ingenuity first it was conical flasks, beakers, measuring cylinders but no test-tubes. test-tubes main purpose was to store liquids, but not to measure and that is why they are useful. they are also a safe way to heat and mix liquids. http://www.crscientific.com/properheating2.html On July 25, 1978, Louise Joy Brown,
the world's first successful "test-tube" baby
was born in Great Britain.
Though the technology that made her conception
possible was heralded as a triumph in
medicine and science, it also caused many
to consider the possibilities of future ill-use.
people have tried to 'make' these
test tubes babies but sometimes it fails, scientists
compare the heath of test tube
babies and normal children and it
seems they have heath differences.

http://history1900s.about.com/od/medicaladvancesissues/a/testtubebaby.htm Cultural factor some people think test tube babies are a good thing, others disagree with this, I thing it is OK to do/make test tubes babies but i think it is better to have normal children instead Test tubes have a very reasonable cost but it really depends on what type of test tube you buy; the cost of a test tube made for heating chemicals could cost more then a regular teat tube because it is made with a more expensive glass (borosilicate glass). Economical factor http://webpath.follettsoftware.com/resource/viewurl?encodedUrl=ro64b5gCJeMjSqlUJygrT3B-Iqwx_PBiMXx_Ey_EUxE&version=1&appsignature=Destiny&appversion= I believe the price is good for what they offer (depending if what they are saying is true). My opinion on test tube Economy
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