X-ray micro-computed tomography can provide information about the composition and internal structure of materials commonly found in heritage buildings such as natural stone, mortar, brick, concrete and wood.

Often wax-containing objects suffer degradation: analytical chemistry provides the key to designing appropriate conservation strategies and materials for such objects in heritage collections.

This technical brief describes a tool in the form of a “periodic table” to assist in optimizing liquid chromatography separations selected by following the guidance provided in AMCTB No. 107.

Quoted values of measurement uncertainty (MU) are only ever estimates, being subject to their own uncertainties. This has implications for selecting a way to compare two values of MU.

A collaborative trial (an interlaboratory study) is reputed to be the most reliable way of validating an analytical procedure applied to a defined class of test material, however, the popularity of trials is declining while the need for information from them is escalating.