Fastness of fluorescent whitened paper and board
Determination of the speed of transfer of optical brightening agents (OBAs), also known as fluorescent whitening agents, from paper and board. The test is performed against UV light to provide a rating for the bleeding of the OBAs.
The applied simulants are
Olive oil
3% acetic acid
Alkaline salt solution (saliva simulant)
Distilled water
The test is relevant for optically brightened paper and paperboard but also for paper and board with recycled fibers, especially if they are intended for food contact.
When ordering this test, please indicate if the material is intended for short or long contact with food.
- Suitable sample matrices
- Paper and board
- Required sample quantity
- 3 x A4
- Typical turnaround time
- 3 weeks after receiving the samples
- Available quality systems
- Accredited test method
- Standard
- Method expert
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