Crystallisation of saltpetre

Crystallisation of saltpetre

V600/0059 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 50.6MB

Downloadable file size: 11.5MB

Price image Pricing

Please login to use the price calculator


Caption: Crystallisation of saltpetre. Historical engraving of a worker crystallising saltpetre, or potassium nitrate. To extract saltpetre, soil is washed and the resulting water boiled. Distilled water is added to the evaporates, which are then filtered. Saltpetre is extracted from this solution by boiling. As it precipitates out it crystallises (zig-zags) on the pans. Saltpetre was used to make gunpowder. Taken from The Laws of Art and Nature, in Knowing, Judging, Assaying, Fining, Refining and Inlarging Bodies of Confin'd Metals (1683), John Pettus, a translation of the work by Lazarus Erckern.

Release details: Model release not required. Property release not required.

Keywords: 1600s, 17th century, adult, apparatus, black-and-white, chemical, chemistry, crystallising, crystals, engraving, equipment, extracting, extraction, heating, historical, history, history of science, human, illustration, laboratory, male, man, metallurgy, monochrome, oven, pan, potassium nitrate, saltpeter, saltpetre, technology, worker

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.