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Lesson 1, Topic 1
In Progress

Measuring liquids

Measuring liquid

  • Pipettes are long, narrow tubes that are used to suck up an accurate volume of liquid and transfer it to another container.

  • A pipette filler attached to the end of the pipette is used so that you can safely control the amount of liquid you’re drawing up.

  • Pipettes are often calibrated to allow for the fact that the last drop of liquid stays in the pipette when the liquid is ejected. This reduces transfer errors

  • Burettes have a tap at the bottom which can be used to release the liquid into another container

  • To use a burette, take an initial reading, and once you’ve released ass much liquid as you want, take a final readingĀ 

  • The difference between the readings tells you how much liquid you used

  • Measuring cylinders are the most common way to measure out a liquid.

  • They come in different sizes

  • You must choose an appropriate cylinder for the volume of liquid you are measuring. If you are measuring out a small amount of liquid, use a small measuring cylinder