ISO brightness of paper or paperboard
The method measures the diffuse blue light reflectance factor of paper and board by the ISO 2470-1 standard.
The test is limited to white and near-white samples. The measurement is used to determine the whiteness level of paper and cardboard.
- Suitable sample matrices
- White paper and cardboard
- Minimum sample amount
- Four A4 sheets
- Typical turnaround time
- 2 weeks after receiving the samples
- Quality system
- Accredited test method
- Standard
- Method expert
![Ville Roininen]()
Ville Roininen
Paper and board
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