Wavelength accuracy test solution
US4461718A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 1981 |
| Grant date | Jul 24, 1984 |
| Priority date | — |
| Expiry date | Dec 15, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/109163
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A wavelength calibration solution comprising from about 0.025 to about 0.140 molar neodymium and from about 0.135 to about 0.550 molar samarium, wherein the neodymium is present as a neodymium ionized constituent and the samarium is present as a samarium ionized constituent. A method for checking the wavelength accuracy of spectrometers or spectrophotometers of the type comprising measuring the absorbance (A) or percent transmittance (% T) of a wavelength calibration check solution versus a blank at more than one wavelength. The method is characterized in that the above solution is employed therein as the wavelength calibration check solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.