Biocides

Herbaria with desiccated plants, composed of organic material combined with other organics such as glues, pastes and other cellulose-based and proteinaceous materials are particularly vulnerable to pest infestations. Several chemical compounds have been used either to prevent infestation or to fight an existing pest attack. Most of them are now phased out or restricted in use and production. Biocides pose numerous threats both to artefacts and people working in the heritage sector, such as conservators.