docimastic

from The Century Dictionary.

• Proving by experiments or tests; assaying; specifically, relating to the assaying of metals: as, the docimastic art. Also dokimastic.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Proving by experiments or tests.
• adjective metallurgy, or the art of assaying metals; the art of separating metals from foreign matters, and determining the nature and quantity of metallic substances contained in any ore or mineral.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective dated of, or relating to an experiment, test or assay