A <a href="https://en.wikipedia.org/wiki/meniscus" class="extiw" title="en:meniscus">meniscus</a> of water in <a href="https://en.wikipedia.org/wiki/burette" class="extiw" title="en:burette">burette</a>. 21.00 mL.
<a href="//commons.wikimedia.org/wiki/User:Akaniji" title="User:Akaniji">User:Akaniji</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>