ISO brightness of paper or paperboard
The method measures the diffues blue light reflectance factor of paper and board. The method is limited to white and near white samples. The measurement is used to determine the whiteness level of paper and cardboards.
Surface testing- Suitable sample matrices
- White papers and cardboards
- Minimum sample amount
- Four A4 sheets
- Typical turnaround time
- 2 weeks after receiving the samples
- Quality system
- Accredited test method, Accredited testing laboratory
- Standard
- ISO 2470-1 and 2
- Method expert
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2
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3
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4
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