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Re: Re: agitation or agitate

It is a condition that has to be fulfilled:
The test chamber shall (must) have the capability of agitating the test dust. (Otherwise you are not allowed to use the test chamber for this particular test)

"shall" means "must" or "has to".

Where I work we don´t use the word "must" in written language, we use "shall" instead.

Re: Re: Re: agitation or agitate

Okay, that fits.