Which procedure for dispensing a liquid with  a volumetric pipet is correct?

Draw the liquid up to the line on the pipet using a pipet bulb. Squeeze the bulb to force all the liquid in the pipet into the receiving container.

Introduce the liquid into the top end of the pipet until it is filled to the line. Allow the liquid to drain into the desired container. Blow on the pipet to release the last drop.

Draw the liquid above the line on the pipet using a pipet bulb. With a finger on the top of the pipet allow the curve of the meniscus to drop to the line. Place the tip of the pipet against the side of the receiving container and allow the liquid to drain.

Draw the liquid above the line on the pipet by sucking on the open end of the pipet. Place a thumb on the top of the pipet and allow the curve of the meniscus to drop to the line. Allow the liquid to drain into the receiving container pipet against its side.