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a test tube rock is used to measure liquids
A test tube 13 mm (about half an inch) in diameter and 100 mm (a bit under 4 inches) long.
that depends on the kind of test tube that you have. if a test tube is calibrated then it measures the volume of a liquid that is placed inside it. if the test tube is non calibrated then its meant for storage and mixing so it does not measure anything..
widal slide is easier and it save time but widal tube test is not easy and it takes time.
Red top evacuated tube
yes they do not actually take the root it is not pulled it is cut, a hair test is a hair test . you can see actual hair test collection on you tube search Hair Collection for Drug Testing
when was test tube first made,when and who?
test tube is classified in to various types namely hard test tube ,boiler test tube,20 ml test tube
perform a tube leak test perform a tube leak test perform a tube leak test perform a tube leak test perform a tube leak test perform a tube leak test perform a tube leak test
A test tube is usually used to contain small amounts of fluids, usually to react or to hold temporarily. It is also used to clearly observe different reacting samples of chemicals in a experiment which usually call for many test tubes. Heating a test tube is done by a water bath, but usually not direct heat. Also, an inverted test tube can be used for gas collection in a gas emitting reaction by water displacement.
A test tube (or sample tube) has no errors.
Test tube brush=use for cleaning test tubes
Test tube holder
Clamping a test tube
no.
to hold the test tube
it vapourise from the test tube