Subject: Optical brighteners
We would like to know if optical brighteners (whitening agents) in herbarium paper could have a harmful effect on the specimens? Monika Akerlund Curator Preventive Conservation Croup Swedish Museum of Natural History Box 50007 SE-104 05 Stockholm Sweden +46 8 519 542 01 Fax: +46 8 519 540 85 *** Conservation DistList Instance 20:35 Distributed: Monday, January 15, 2007 Message Id: cdl-20-35-019 ***Received on Thursday, 11 January, 2007