Method and apparatus for determining the water content of organic solvent solutions
US8455827B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2010 |
| Grant date | Jun 4, 2013 |
| Priority date | — |
| Expiry date | Sep 19, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/359
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for determining the amount of water in an organic solvent solution, such as a DMSO solution. The apparatus comprises an infrared LED for emitting near infrared light; a laser diode collimator for forming a collimated light beam from the light emitted by the LED; a sample container holder for accepting a sample container containing a sample solution; a photodiode for generating an output signal that is related to the intensity of the collimated light beam after the collimated light beam has passed through the sample solution; and a control means for controlling the stability of the near infrared light emitted by the infrared LED by controlling an amount of current flowing through the infrared LED.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.