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en.wikipedia.org/wiki/Test_tube_holder

A test tube holder is used to hold Test Tubes. It is used for holding a test tube in place when the tube is hot or should not be touched. For example, a test tube ...

en.wikipedia.org/wiki/Test_tube_rack

Test tube rack is a laboratory equipment that is used to hold upright multiple test tubes at the same time. It is most commonly used when various different ...

teachertech.rice.edu/Participants/louviere/vms/science/labequipment.html

Used to plug a flask or testtube for safe keeping. Test Tube. Used to mix, heat, or store substances. Test Tube Rack. Used to hold test tubes. Test Tube Holder.

www.reference.com/science/uses-test-tube-holder-aefeed4421c79efb

Test tube holders are used to distance a person from potentially dangerous tasks when ... What are some examples of laboratory equipment and their functions?

www.sciencecompany.com/Test-Tube-Clamp-Holder-P6285.aspx

This test tube holder, or clamp, is 6.25 inches long with finger grips. Holds any size test tube. The test tube holder is used to hold test tubes when they are hot ...

www.reference.com/science/uses-test-tube-rack-63fedfb87f9d763a

Test tube racks are commonly used in laboratories to keep test tubes upright so ... A test tube that is always returned to its rack is less likely to develop chips or ...

www.universalmedicalinc.com/all-products/laboratory/organizers/test-tube-racks.html

Many of the test tube holders are able to sink in water without tipping over the test tubes.Test tube racks are a great tool to have in the lab. Used mainly for ...

www.ask.com/youtube?q=What+Is+A+Test+Tube+Holder+And+What+Are+Its+Uses&v=Wixoe-Ne-yI
Jun 22, 2017 ... Test tube holder what will the weight of test be if a paper is inserted into it and it's closed with cork? And, after heated up do they use real guns ...

www.quora.com/What-is-a-test-tube-holder-used-for

What will the weight of test tube be if a paper is inserted into it and it's closed with a cork? And, after the test tube is heated up and the... Did knights ever use ...