A graduated cylinder is a tall, narrow laboratory container marked with volume graduations (like milliliters) and is primarily used to measure the volume of liquids accurately —more precisely than a beaker but less precise than a volumetric flask or pipette.

Main everyday uses

  • Measuring specific volumes of liquids for chemical reactions, biological experiments, or pharmaceutical preparations.
  • Preparing solutions of known concentration by measuring exact volumes of solvents such as water or alcohol.
  • Helping students in science classes learn how to read scales, handle lab glassware, and perform volume‑based experiments.

Other neat tricks it can do

  • Measuring the volume of irregularly shaped solid objects using water displacement (you see how much the water level rises when the object is submerged).
  • Acting as a temporary mixing or storage vessel for small‑volume liquids when extra accuracy is needed over a beaker.

How it fits in the lab world

Compared with similar tools, a graduated cylinder sits in a middle‑accuracy zone :

Tool| Typical accuracy vs cylinder| Main role
---|---|---
Beaker| Lower| Rough mixing, heating, storage.39
Graduated cylinder| Moderate| Measuring liquid volumes with visible scale.35
Volumetric flask| Higher| Preparing one exact, fixed volume for precise solutions.39
Pipette / burette| Higher| Very precise delivery or titration of small volumes.39

So in short: if you need to “read a volume” of a liquid in a lab or classroom, that’s what a graduated cylinder is for.