https://www.intertek.com/building/standards/nfrc-202/
NFRC 202: Procedure for Determining Translucent Fenestration Product Visible Transmittance at...
Intertek offers Testing services for Standard NFRC 202 - Procedure for Determining Translucent Fenestration Product Visible Transmittance at Normal Incidence
visible transmittancenfrc202procedure
https://ccsenet.org/journal/index.php/jmsr/article/view/13999
Controlling Transmittance of Visible Light by the Incident Light Angle Using Needle-like TiO2...
Controlling Transmittance of Visible Light by the Incident Light Angle Using Needle-like TiO2 Particle Arrayed Composite Films