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US 12,128,329 B1Granted
Solid phase extraction disk
OwnerKevin Dinneaninventor
Life of this patent
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Abstract
Solid phase extraction (SPE) disks are manufactured by introducing a series of components and/or liquid suspensions into a mold and evacuating the liquid to form a cohesive filter or SPE disk. After all the free liquid has been substantially removed, the SPE disk is removed from the mold and dried. SPE disks are for use in analytical chemistry procedures.
Claims17
A solid phase extraction disk, configured to separate dissolved chemicals, suspended solids and particles from a fluid;
- the solid phase extraction disk comprising:
- an upper cylindrical layer;
- a middle cylindrical layer, arranged beneath the upper cylindrical layer, a portion of the middle cylindrical layer contacting the upper cylindrical layer;
- a bottom circular layer, arranged beneath the middle cylindrical layer and extending upward along a perimeter of the middle cylindrical layer, edges of the bottom circular layer folded over a top surface of the middle cylindrical layer to cover only a portion of the top surface of the middle cylindrical layer;
- wherein the upper cylindrical layer, the middle cylindrical layer, and the bottom circular layer are configured to separate dissolved chemicals, suspended solids and particles from a fluid passing through the upper cylindrical layer, the middle cylindrical layer, and the bottom circular layer;
- wherein the upper cylindrical layer further comprises a first wet-laid glass fiber;
- wherein the middle cylindrical layer further comprises a second wet-laid glass fiber and at least one sorbent;
- and
- wherein the bottom circular layer is made from a glass fiber mesh or a filter paper.
6 more elements
Dependencies are inferred from the claim text.