Pipette

A pipette is a laboratory instrument used to transport a measured volume of liquid.

Picture: http://www.fromnaturewithlove.com/images/PipetteDropper.jpg

Source: http://en.wikipedia.org/wiki/Pipette

Burette

A burette is a vertical piece of laboratory glassware with a volumetric graduation on its full length and a precision tap, or stopcock on the bottom.

Picture: http://www.glasscolabs.com/product/enlarge/2.1.2.jpg

Source: http://en.wikipedia.org/wiki/Burette

What is surface tension?
Surface tension is a property of the surface of a liquid which causes it to be attracted to another surface. It is caused by cohesion, which is the attraction of molecules. The effects of surface tension can be seen with ordinary water, such as water dripping from a tap or soap bubbles.
Source: http://en.wikipedia.org/wiki/Surface_tension