There are very few objects or materials we will not treat, only treat after assessing them carefully or treat at lower temperatures with an extended holding phase. These are: parchment, deteriorated untanned leather, wax lined paintings, wax sculptures, deteriorated rubber, improperly varnished objects with insufficient binding between surface and varnish, oil or fat containing natural history specimens or oil or fat containing ethnographic objects.
For the few objects and materials that we do not treat with the ICM method, we offer an alternative treatment in an oxygen-free atmosphere using oxygen scavengers. These treatments take between 6 – 8 weeks. Please ask us for details.