Neutralising agent for worktop benchmark (14)

I believe the answer is:

countermeasure

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'neutralising agent' is the definition.
(I've seen this before)

'worktop benchmark' is the wordplay.
'worktop' becomes 'counter' (I've seen this before).
'benchmark' becomes 'measure' (I can't justify this - if you can you should believe this answer much more).
'counter'+'measure'='COUNTERMEASURE'

'for' is the link.

Can you help me to learn more?

(Other definitions for countermeasure that I've seen before include "neutralising agent" , "preventive step" , "act of defence?" , "retaliatory action" , "antidote" .)

I've seen this clue in the Sydney Morning Herald.

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