UV instrument USP/EP qualification set, for wavelength and photometric accuracy, stray light and resolution tests. Includes 5 and 10 mm pathlength cuvettes to allow stray light testing using the filter ratio method outlined in USP Chapter 857. Supplied in sealed quartz cuvettes with a CoA. UV instrument USP/EP qualification set, for wavelength and photometric accuracy, stray light and resolution tests. Includes 5 and 10 mm pathlength cuvettes to allow stray light testing using the filter ratio method outlined in USP Chapter 857. Supplied in sealed quartz cuvettes with a CoA.