Secondary spectrophotometric calibration standard

This set of secondary standards permits to check the accuracy of photometers with respect of absorbance and wavelength.

In order to comply with various national and international standards these checks have to be done in regular intervals.

In set the set there are three certified, mounted glass filters for checking the absorbance accuracy and one certified, mounted holumn oxid filter for checking the wavelength accuracy.

Certified absorbance values (gray glass): 440nm, 465nm, 546nm, 590nm, 635nm

Peak position for wavelength accuracy (holmium oxid): 279.3nm, 360.9nm, 453.5nm, 536.3nm, 637.6nm

Outside dimensions of mounted filters: 45 x 12.5 x 12.5mm

P/N 260320