Employed by laboratory? Save up after ordeal and go to Spain!
I believe the answer is:
test tube
'ordeal and go to spain' is the definition.
I can't tell whether this definition defines the answer.
'employed by laboratory? save up' is the wordplay.
'employed by' means one lot of letters goes inside another.
'laboratory?' becomes 'teste' (I can't justify this - if you can you should believe this answer much more).
'save' becomes 'but' (I've seen this before).
'up' is a reversal indicator (in down clue: letters go upwards).
'but' back-to-front is 'tub'.
'teste' placed around 'tub' is 'TEST-TUBE'.
'after' acts as a link.
Can you help me to learn more?
(Other definitions for test tube that I've seen before include "Laboratory experimental container" , "where reactions are observed" , "birthplace of science" , "experimental site" , "Item used in chemical reactions" .)