| http://www.w3.org/ns/prov#value | - After the frame has been formed with the filling manifold system 13 on one side and the venting manifold system 21 on the other side and the test wells 19 have been drilled therein, the cartridge is completed by gluing or otherwise securing a flexible or rigid sheet 26 of transparent plastic or other suitable material onto the front side and back side of the frame.
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