96 well micro plate validation filters for wavelength and absorbance scales, NIST Traceable with UKAS ISO 17025 accredited certificate of calibration. The primary useage is the validation of the visible of photometric scale of 96 well micro plate readers, with a useable wavelength of 360nm to 637nm and an absorbance scale of 440nm to 635nm. It's configured with glass filters mounted in 96 well format anodized aluminum holder.