Lab worker (7)
I believe the answer is:
chemist
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">lab worker</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for chemist that I've seen before include "Faraday, for example" , "drugs supplied by me?" , "Dispensing shop" , "Scientist; type of shop" , "Drugstore" .)