Measuring station for a photometer
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United States of America Patent
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-
May 6, 1986
Grant Date -
N/A
app pub date -
Oct 26, 1983
filing date -
Oct 27, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A measuring station for a photometer has an aperture which connects a measuring chamber and the environment and through which a sample vessel can be introduced into the measuring chamber and/or removed from the measuring chamber. The sample vessel is raised and lowered by a plunger which is adapted to seal against the aperture by means of a sealing element. The sealing element has a first position in which its periphery circumscribes a smaller area than the internal clear cross-section of the aperture, to permit the sample vessel to be lifted into the chamber. The sealing element can then be expanded radially into sealing engagement with the aperture to seal the plunger to the walls of the aperture to prevent ingress of light.
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