Well plate
First Claim
1. An apparatus for preparing one or more samples for measurement by X-ray fluorescence spectrometry, the apparatus comprising:
- a plate having at least one hole penetrating said plate;
a film covering said hole oriented normal to said film; and
said hole having a diameter between 10 micrometers and two millimeters in at least one dimension parallel to said film at the location where said hole adjoins said film; and
wherein said film is permanently attached to said plate; and
said film has less that about 4% by weight of at least one of the elements selected from sulfur, phosphorus, and chlorine.
16 Assignments
0 Petitions
Accused Products
Abstract
The present invention includes an apparatus for preparing samples for measurement by x-ray fluorescence spectrometry. The apparatus comprises a plate having one or more holes passing through the plate. The holes are covered by a film on one side of the plate. The holes are less than 500 micrometers across in one dimension where the film covers the holes. The film is translucent to x-rays. The present invention also includes an apparatus for preparing samples for measurement by x-ray fluorescence spectrometry. The apparatus comprises a plate having one or more holes passing through the plate. The holes are covered on one side of the plate by a detachable cover forming a water-tight seal against the plate. The cover is substantially free of the elements osmium, yttrium, iridium, phosphorus, zirconium, platinum, gold, niobium, mercury, thallium, molybdenum, sulfur, lead, bismuth, technetium, ruthenium, chlorine, rhodium, palladium, argon, silver, and thorium. The holes are less than about 500 micrometers across in one dimension where the cover covers the holes. The present invention also includes a method for preparing samples for measurement by x-ray fluorescence spectrometry. The method comprises providing a solution of with less than 10 micromolar solute and a volume of between about 2 microliters and about 2 milliliters. The solution is concentrated and analyzed using x-ray fluorescence spectrometry.
24 Citations
14 Claims
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1. An apparatus for preparing one or more samples for measurement by X-ray fluorescence spectrometry, the apparatus comprising:
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a plate having at least one hole penetrating said plate; a film covering said hole oriented normal to said film; and said hole having a diameter between 10 micrometers and two millimeters in at least one dimension parallel to said film at the location where said hole adjoins said film; and
wherein said film is permanently attached to said plate; andsaid film has less that about 4% by weight of at least one of the elements selected from sulfur, phosphorus, and chlorine. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for preparing one or more samples for measurement by X-ray fluorescence spectrometry, the apparatus comprising:
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a plate having at least one hole penetrating said plate; a film covering said hole oriented normal to said film; and wherein the hole is shaped so that the length of a contact line diminishes for at least a portion of a time during which the volume of a solution in the hole is reduced, and the contact line is defined by the solution and the solid surface of the holes; and wherein the hole is wider where it adjoins the film than where the hole is at its narrowest; and wherein said film is permanently attached to said plate. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification