Photometric Standard Hf-Srs 0.2 Au 45 Mm , Each

Details:

HF-Series (400-700nm) Absorbance- 0.2au (60%T)Standard^ HF-Series (400-700nm) Absorbance- 0.2au (60%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.