- Test Conducted and Certified by Avian Technologies
( www.aviantechnologies.com) Cert. No. AT-082400-1
- Measurement Instrument: Perkin-Elmer Lambda-9/19 UV-Vis-NIR Spectrometer Ser. No. 1104
- Traceability of measurement: ASTM Test Method E 1331-96, Test Method E903-96
- Measurement Conditions:
| Mean Temperature: | 18.8 deg C | |
| Relative Humidity: | 70% | |
| Instrument Parameters: | | |
| Bandpass: | 2 nm (UV-Vis) | |
| NIR Sensitivity: | 4 | |
| Recording Interval: | 1.0 nm | |
| Scan Speed: | 120 nm/min | |
| Number of measurements averaged per sample: | 3 |
- Measurement Procedure:
- The THR measurements were performed on a Perkin-Elmer Lambda 9/19 UV-Vis-NIR Spectrophotometer.
- The instrument was set up in total hemispherical reflectance geometry (8 deg/t).
- The measurement beam is well collimated (max angle) of convergence is +/- 4 deg.
- The reflectance factor measurements were relative to packed PTFE
powder per ASTM Practice E259-98 and CIE 15.2 at ambient temperature
(18.5 +/- 1 deg) and humidity (70 +/- 5 %).
- The calibration of the sample was performed at 1.0 nm intervals over the wavelength 250-2500 nm.
- A deuterium source (300-320 nm) or tungsten-halogen (320-2500 nm) were used in
combination with a photomultiplier detector in the UV-Vis and a lead sulfide detector in the NIR.
- Other References:
- ASTM Standard Practice E 275-93 "Describing and Measuring Performance of UV, Vis, and NIR Spectrophotometers"
- ASTM Standard Practice E 925-94 "Periodic Calibration of Narrow Band-Pass Spectrophotometers"
- Excel data file
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