Transfer of optical brightening agents (OBAs) from paper or board by EN 648
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 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.
- Suitable sample matrices
- Paper and board
- Typical turnaround time
- 3 weeks after receiving the samples
- Available quality systems
- Accredited test method