PHOTOMETRIC STANDARD HF-SRS 0.3 AU 45 MM , Each

Details

HF-Series (400-700nm) Absorbance- 0.3au (50%T)Standard^ HF-Series (400-700nm) Absorbance- 0.3au (50%T)VIS Photometric Accuracy Calibration Standard, External dimensions: 12.5 x 12.5 x 45 mm, NIST-Traceable filter for validating photometric performance of a spectrophotometer.