Transdermal cell test matter volume-adjustment device

摘要

In a transdermal cell, a matter volume-adjustment male device includes the lower opening end of the through-space structure having inner wall female threads mateable with first male threads of a screwable matter volume-adjustment male member alternately adjustable upwardly and downwardly between opposite upper and lower female threads-termination points. The screwable matter volume-adjustment member has opposite first upper and lower male threads-termination points, and the inner wall female threads are further concurrently mateable with a bottom closure member having second male threads having opposite second upper and lower male threads-termination points. There is a first annular sealing ring sealably mounted in an annular groove around the screwable volume-adjustment male member between the first upper and lower threads-termination points positioned between the inner wall female threads and the first male threads, and there being a second annular sealing ring sealably mounted the second male threads at a location below the second upper termination point.