The most common and most likely answer to this crossword clue is the 5 letter word BURET
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More clues leading to the result BURET
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The straight part
We know that "US chemist may measure liquid in it" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case us chemist may measure liquid in it = buret.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does BURET mean?
BURET noun- A glass tube with fine gradations and a stopcock at the bottom, used in laboratory procedures for accurate fluid dispensing and titration.
- An altar cruet.