Photometric Standard Spb Srs 0.2au 45 mm , Each

Details:

Spb-series (200-3300nm) absorbance- 0.2Au (60%t)standard^ spb-series (200-3300nm) absorbance- 0.2Au (60%t) uv/vis/nir photometric, wavelength & stray light calibration, external dimensions: 12.5 X 12.5 X 45 mm, nist-traceable filter for validating photometric performance of a spectrophotometer.