Notes on the use of acid absorbents in storage of cellulose acetate-based materials : competitive absorption of water and acetic acid on seolite 4A+

Frank Ligterink

Cellulose acetate based plastics have shown signs of chemical degradation resulting in a release of acetic acid. The application of zeolite 4A in storage containers both as a desiccant and as an acid absorbent to slow down this so-called vinegar syndrome has been suggested by some researchers.

A survey of problems with 'early' plastics

Thea van Oosten

Three collections containing early synthetic materials (plastics) were surveyed in order to assess the types of deterioration in relation to the composition of the materials and the storage conditions.

Crystals and crazes : phenomena in plastics due to micro climates

Thea van Oosten

The change of the Tropenmuseum : doing risk assessments in the coin collection

Ute Werner, Bart Ankersmit, Ineke Joosten, Martijn de Ruijter, Luc Megens

Ten years ago, the Tropenmuseum in Amsterdam discovered significant damage of the lead coins in its storage.  Up to now, some lead coins are already completely lost and it has to be assumed that the underlying cause is not relieved yet. 

Decisions on the restoration of a Trobriand yam storehouse : the ‘Decision Making Model for the Conservation and Restoration of Modern Art’ applied to an ethnographic object

Désirée C.J. Wisse, Agnes W. Brokerhof, Tatja Scholte

Insects and fungi in textile collections

Agnes W. Brokerhof

This book sets out to present the basic information for the professional safekeeping of textile collections.

Low-oxygen treatment and solarisation of the Probota iconostasis : alternative pest control methods in the field

Agnes Brokerhof

The disinfection of an iconostasis with low oxygen concentration and a experimental solarisation heat treatment in Romania is described.

Michael Sweerts on the block? : the ICN and the sale of items from museum collections

Arjen Kok

Disposal of unwanted items has been an accepted part of museum collection management in the Netherlands since 1999.

The behaviour of iron and sulphuric acid during iron-gall ink corrosion

Han Neevel

The degradation of paper artefacts by iron-gall inks is caused by two ingredients in the ink: sulphuric acid and iron(II) sulphate.

Visible progress of paper degradation caused by iron gall inks

Birgit Reissland

Paper documents written with iron gall inks change their appearance over time due to the degrading influence of the ink.