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ASTM E1791-96(2014)
Standard Practice for Transfer Standards for Reflectance Factor for Near-Infrared Instruments Using Hemispherical GeometryMore info
1.1 This practice covers procedures for the preparation and use of acceptable transfer standards for NIR spectrophotometers. Procedures for calibrating the reflectance factor of materials on an absolute basis are contained in CIE Publication No. 44 (9). Both the pressed powder samples and the sintered PTFE materials are used as transfer standards for such calibrations because they have very stable reflectance factors that are nearly constant with wavelength and because the distribution of flux resembles closely that from the perfect reflecting diffuser.
| Author | ASTM |
|---|---|
| Editor | ASTM |
| Document type | Standard |
| Format | File |
| Confirmation date | 2014-05-01 |
| ICS | 37.020 : Optical equipment |
| Number of pages | 4 |
| Replace | ASTM E1791-96(2008)e1 |
| Set | ASTMVOL0306 |
| Year | 2008 |
| Document history | |
| Country | USA |
| Keyword | ASTM 1791;ASTM E1791;ASTM E1791;10.1520/E1791-96R14 |