Manual Mixing in a Full Test Tube

CCA! Volume 6

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Manual Mixing in a Full Test Tube

There is too much solution in the test tube to sufficiently mix the two components by tapping the test tube.


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Movie Size - .4 MB
Movie Duration - 11 Seconds
File - CCA6/MOVIES/Labcurrent/mixing/01173426.MOV

The demonstration on this page shows a technique that should not be used by undergraduate chemistry laboratory students.

Discussion

There is too much solution in the test tube to sufficiently mix the two components by tapping the test tube. You should use a glass rod if the test tube is filled to near capacity. If the tube is completely full a glass rod will cause it to overflow, so a larger container will be needed.

Narrative

Be careful not to overfill the test tube, for mixing will be difficult and spilling will be likely.