Patent ID: 8033164

Claim:
An apparatus comprising: (a) a first test coupon, which comprises a top face and a bottom face; (b) a test framework, which comprises a top face, bottom face, and a plurality of walls that define a number N of test holes; wherein the top and bottom faces of the test framework are generally flat, spaced apart from, and generally parallel to, each other; the test holes pass through the test framework between bottom openings at the bottom face of the test framework and top openings at the top face of the test framework and are spaced apart from each other; N is an integer of from 2 to 200; and the bottom face of the test framework operatively contacts, around the bottom openings of at least two of the test holes, the top face of the first test coupon to independently circumscribe at least two separate test areas on the top face of the first test coupon; and (c) a second test coupon, which comprises a top face and a bottom face; wherein the top face of the test framework operatively contacts, around the top openings of the at least two test holes, the bottom face of the second test coupon to independently circumscribe at least two separate test areas on the bottom face of the second test coupon; wherein at least two test chambers are defined by the walls of the at least two test holes, the at least two separate test areas circumscribed on the top face of the first test coupon, and the at least two separate test areas circumscribed on the bottom face of the second test coupon.