Description_x000D_ General description_x000D_ Contains 7 filters (1 blank filter, 3 filters for checking UV/Vis wavelenght systematic error and precision, 3 filters for photometric verification)_x000D_ The secondary UV/Vis Eppendorf BioSpectrometer Reference Filter Set is used to verify photometric accuracy and wavelength systematic error._x000D_ Features and Benefits_x000D_ • Filter traceable to NIST_x000D_ • Filter recertification via Eppendorf (contact: Eppendorf Service)_x000D_ • Inspection protocol preprogrammed in device_x000D_ • Verification of wavelength accuracy and precision at 260 nm, 280 nm and 800 nm_x000D_ • Verification of the photometric accuracy and precision in the 260 nm to 800 nm range_x000D_ • The variation coefficient is listed along with the average value of 15 measurements._x000D_ • Contains 7 filters (1 blank filter, 3 filters for checking UV/Vis wavelenght systematic error and precision, 3 filters for photometric verification)_x000D_ Legal Information_x000D_ Eppendorf is a registered trademark of Eppendorf AG