Close-up photograph of a wooden surface with a brass nail or pin partly embedded, showing wood grain and circular grain pattern.

Soil Chromatography

A page from a workshop presentation about soil chromatography, discussing topics like sodium hydroxide, silver nitrate, and their effects on soil and aquatic environments.
Page with instructions titled "The Process" detailing steps for preparing a soil sample, including making sodium hydroxide solution, preparing soil, measuring using filter paper, and adding silver nitrate solution, with numbered steps and detailed descriptions.
Diagram of a petri dish with labeled zones: outer zone labeled 'Outer,' middle zone labeled 'Middle,' and center zone labeled 'Centre.' The zones are color-coded with the outer zone indicated as a 'cloud' for bacterial activity, middle zone has dark colored channels and spikes, and the center zone is light-colored/blank indicating mineral presence.
A page titled 'Materials List' with a list of supplies including scientific filter paper, sodium hydroxide, silver nitrate, distilled water, jars, bottle lids, petri dishes, a box or drying cupboard, pestle and mortar, sieve, and weighing scales.