Extraction apparatus

12-15. (canceled)

A method for dissolving and/or suspending a solid, gel, powder, granular, liquid or viscous liquid test substance in an extraction fluid comprising the steps of:

• (a) introducing the test substance into the extraction chamber of an apparatus as defined in any one of the preceding claims;
• (b) crushing, grinding and/or cutting the test substance with the grinding head to produce a pulverized test substance before, during or after the step (c) of extracting the test substance by pumping extraction fluid through the extraction chamber and over the test substance to dissolve, suspend and/or distribute said test substance throughout the extraction fluid.

29-37. (canceled)