Opacity of paper or board
This method is used to determine the opacity (paper backing) of paper by diffuse reflectance.
The test is suitable for papers and boards that contain fluorescent whitening agents, as long as the UV content of the radiation incident on the test piece has been adjusted using a fluorescent reference standard as described in ISO 2470‑1. The method is not suitable for colored paper or cardboard that contains fluorescent dyes or pigments.
More information about the method family:Spectrophotometry
- Suitable sample matrices
- Paper and board
- Typical turnaround time
- 3 weeks after receiving the samples
- Available quality systems
- Accredited test method
- Device types