A test method and test device for hygiene monitoring of a test sample from a biological material or a surface with a biological material to detect the presence of phosphate and glucose as a measure of hygiene by employing a swab-type, puncturable-membrane test apparatus or a lateral-flow or capillary-flow test apparatus. One such apparatus has a generally longitudinal body that can impel itself through the medium. The clamp preferably enables the longitudinal axis of the rod to be offset or laterally displaced from the longitudinal axis of the bone anchor. When the media bodies have filtered mine drainage containing a particular dissolved metal such as manganese or iron for example, a residue remaining in the basin is a rich source of metal compounds that can be recovered for economic use. A thickness of the feature is estimated based on the adjusted value. The interchangeable advertising media location is generally configured to receive an advertising media logo that may be quickly and easily removed and replaced with a different advertising media logo.