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Cambridge IGCSE chemistry
Lesson 4, Topic 1
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 reading
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