A biopassivation method has been proposed as a new ecological and sustainable solution for preserving copper-based artefacts using selected microorganisms. This technology is based on the natural capacity of some fungi to form copper oxalates corroded surface alloys. Existing unstable pulverulent corrosion products are converted into an insoluble chemically stable biopatina that provides treate...

Freezing is known as a method that considered to quickly eradicate active forms of plants and insects so it can kill their eggs in ancient manuscripts The purpose this research find out more about the causes manuscript damage application freezing form preservation method. used descriptive with an approach. uses qualitative While informants study were Head collection, conservation, preparation s...