Sample matrix for infrared spectroscopy
First Claim
1. In an infrared spectrometer which includes (1) an infrared source, (2) an optical array, (3) an infrared detector and (4) a means for recording transmitted spectrum over a range of wave numbers;
- the improvement which comprises the infrared spectrometer including a sample carrier which is comprised of a mesh which is opaque or totally transparent to infrared light, wherein the mesh size is within the range of about 20 to about 700.
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Accused Products
Abstract
The utilization of the sample holder of this invention in infrared spectroscopy overcomes some of the major problems typically encountered with sample holders used in traditional techniques. More specifically, the utilization of the sample holder of this invention eliminates interference fringes typically encountered with films which are prepared from the sample. Traditional sample preparation is frequently a highly labor intensive, multi-step process. The present invention offers a significant advance in the state of sample preparation by virtue of being a simple and robust technique requiring relatively little labor in a single, easy step. Sometimes there is a desire to procure the infrared spectrum of samples that are not film forming. The sample holder of the present invention can be used equally well with samples that do not form solid films, such as low molecular weight crystalline materials, oils and amorphous solid materials. The present invention more specifically discloses in an infrared spectrometer which includes (1) an infrared source, (2) an optical array, (3) an infrared detector and (4) a means for recording transmitted spectrum over a range of wave numbers; the improvement which comprises the infrared spectrometer including a sample carrier which is comprised of a mesh which is opaque or totally transparent to infrared light, wherein the mesh size is within the range of about 20 to about 700.
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Citations
20 Claims
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1. In an infrared spectrometer which includes (1) an infrared source, (2) an optical array, (3) an infrared detector and (4) a means for recording transmitted spectrum over a range of wave numbers;
- the improvement which comprises the infrared spectrometer including a sample carrier which is comprised of a mesh which is opaque or totally transparent to infrared light, wherein the mesh size is within the range of about 20 to about 700.
- View Dependent Claims (6, 7, 8, 9, 17)
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2. A process for determining the infrared spectrum of a sample which comprises:
- transmitting infrared light through said sample over a range of wave numbers and recording the signal of the transmitted infrared light over the range of wave numbers, wherein the sample is held by a mesh which is opaque or totally transparent to infrared light, wherein the mesh size is within the range of about 20 to about 700.
- View Dependent Claims (10, 11, 12, 13, 16)
- 3. A sample carrier for holding a sample during infrared spectroscopic analysis, said sample carrier being comprised of a frame, a mask in microtiter plate format, and a mesh which is affixed to the mask, wherein the mesh is opaque or totally transparent to infrared light, and wherein the mesh size is within the range of about 20 to about 700.
Specification