Set of measures KNF-1-01

The set of measures is designed for use as a working standard of spectral, integral and reduced directional transmission coefficients, spectral and integral optical density and wavelength at verification (calibration) of photometric scale and wavelength scale of photometers and spectrophotometers. Integral transmission coefficient is determined for source A according to GOST 7721-89 and relative spectral light efficiency curve of monochromatic radiation for day vision according to GOST 8.332-78.Working conditions of the set are:- ambient temperature 10-35 0C;- relative humidity 65±15%.