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The researchers used a technique called gas chromatography to separate the different smells inside the sarcophagus that combined to make its scent.

She also uses soil chromatography, a photographic process that indicates the chemical, physical and biological characteristics of the earth.

It used analytical techniques such as size exclusion chromatography, nuclear magnetic resonance, and scanning electron microscopy allowing scientists to examine not just how the teabags had changed visibly but also structurally.

They also looked at the chemical profiles of the cultures using high-performance liquid chromatography, both at the culture and single-cell level.

The researchers used a wire coil to externally apply a magnetic field to a glass chromatography column filled with stacked disks of stainless-steel mesh.