subliming pot

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Aludel — Aludels, in medieval chemistry, are subliming pots. The term refers to a range of earthen tubes, or pots without bottoms, fitted one over another, and diminishing as they advance towards the top. The lowest is adapted to a pot, placed in a… … Wikipedia
List of alchemical substances — Alchemical studies produced a number of substances, which were later classified as particular chemical compounds or mixtures of compounds.Many of these terms were in common use into the 20th century.* Aqua Fortis nitric acid, can be formed by 2… … Wikipedia
Refrigeration — Commercial refrigeration Ice is used to refriger … Wikipedia

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