Okuzeka
Chemistry vocabulary · Laboratory Equipment and Techniques

Erlenmeyer flask

Meaning in chemistry, with examples

nounCommon term

In chemistry, Erlenmeyer flask means: A glass flask with a flat bottom, a cone-shaped body and a narrow neck. Its shape lets you swirl liquids without spilling, so it is the standard flask for titrations.

In Turkish: erlen, erlenmayer

How it is used

Used daily in teaching and analytical labs. You swirl, heat, stopper or titrate in an Erlenmeyer flask. British labs usually call it a conical flask; Turkish lab staff often just say 'erlen'.

Example sentences

  1. Swirl the Erlenmeyer flask gently while you add the titrant.

  2. Put a white tile under the Erlenmeyer flask so you can see the color change.

Common collocations

  • 250 mL Erlenmeyer flask
  • conical flask
  • swirl the flask
  • stopper the flask
  • beakerA simple cylindrical glass or plastic container with a flat bottom and a small spout, used for mixing, heating and holding liquids. Its volume marks are only approximate.
  • titrationA method for finding the unknown concentration of a solution by adding a solution of known concentration from a burette until the reaction between them is just complete.
  • buretteA long, graduated glass tube with a tap (stopcock) at the bottom, used to add a liquid gradually and measure exactly how much was added, mainly in titrations.
  • volumetric flaskA pear-shaped flask with a long narrow neck and a single line marked on it. Filled to that line, it holds one exact volume, so it is used to prepare standard solutions.

More terms: Laboratory Equipment and Techniques

Practise with graded reading

Reading at the right level is the fastest way to make new words stick. Pick free English books by level: