Cert of Traceability sent with USVis

Question : I have a customer looking for the certificate of traceability for their green tile. Do you have this on file?

Answer:

The White Tile was supplied with a certificate of traceability for its calibration relative to a perfect reflecting diffuser. The Green tile was supplied with Read at Factory values, and is not a calibrated tile, it is a working reference tile. It's assigned values occurred when the sensor was in a known good state of calibration, its tile values are unique to the instrument that measured it. Light Traps do not require calibration. They are assigned a value of 0.00 at all wavelengths.