Altex Scientific, Inc.

Analtech, Inc.

Kenneth Rainin

Emery Major

A fluid control mechanism utilizing a housing having an opening or tunnel through the interior of the same. The housing provides at least one chamber communicating with the housing opening. A seat positions within the housing opening and the chamber. A plug, adapted to occupy the seat and close to restricted passage, positions within the first chamber. Particulate filter means comprising a pressure deformable section which includes a passage to the housing opening partially filled by a relatively rigid filter element. A gap in the filter means passage allows compression of the deformable section.

Fluid control mechanism

A thin-layer chromatographic plate for use with solvents utilizing a substrate having a supporting surface. An adsorbent layer of material is deposited on the supporting surface of the substrate. The adsorbent layer includes a surface separated from the substrate supporting surface which has markings selectively applied to indicate desired positions on the surface of the adsorbent layer.

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Alamo, CA, United States of America

Kenneth Rainin