This NIST-Compliant and NIST Traceable VIS Photometric calibration kit contains three solid-state neutral density (ND) calibration standards with nominal photometric transmittances (%T): 10T, 20T, 30T and a blank.

These kits are manufactured and calibrated in ISO/IEC 17025 accredited facilities, ensuring they fully adhere to required NIST policies and procedures and are entirely compliant with NIST SRM 930e.