Device for reference measurement and photometric correction in non-invasive glucose measurement using near infrared spectroscopy
First Claim
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1. A photometric reference member comprising between about 85% (w/w) and about 95% (w/w) PTFE and between about 5% (w/w) and about 15% (w/w) glass fiber.
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Abstract
The present invention provides a photometric reference member comprising PTFE and glass. The member exhibits an absorbance change of less than 0.0001 absorbance units per degree C. over a range of temperatures, preferably from about 20° C. to about 40° C., and over wavelengths from about 600 nm to about 1650 nm, preferably about 600 nm to about 1050 nm. The invention also pertains to methods of using the photometric reference member to correct for temperature variations or drift in absorbance measurements.
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17 Claims
- 1. A photometric reference member comprising between about 85% (w/w) and about 95% (w/w) PTFE and between about 5% (w/w) and about 15% (w/w) glass fiber.
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