field test

from WordNet (r) 3.0 (2006)

field test
    n 1: a test of the performance of some new product under the
         conditions in which it will be used [syn: {field trial},
         {field test}]

from The Collaborative International Dictionary of English v.0.48

field-test \field-test\, field test \field test\v. t.
   to test something in the field, i. e. under the actual
   conditions under which it will be used; as, The Army
   field-tested the new tanks. Used in contrast with testing in
   a laboratory or under controlled conditions.

   Syn: field test.
        [WordNet 1.5 +PJC]