This suite of STRANASKA® reference material artifacts are intended for the calibration and/or verification of the wavelength scales of molecular absorption spectrophotometers in the ultraviolet (UV), visible (VIS) and short-wave near infrared (SW-NIR) regions of the electromagnetic spectrum. Each filter is provided in a protective canister for storage and transportation purposes. The certification for each standard is valid for five (5) years. The Certificate of Calibration for each standard includes the wavelength reference values and expanded uncertainties, transmittance spectrum, calibration measurement conditions and instructional guidelines for use. The wavelength standards are offered in both CRM and CA2M brands.