Ertzt Prints

Athanor or Slow Harry, a self-feeding furnace maintaining a constant temperature
£69.98 Framed (other products available)

Athanor or Slow Harry, a self-feeding furnace maintaining a constant temperature
£69.98 Framed (other products available)

Furnace for processes where protracted heat required
£69.98 Framed (other products available)

Washing ore to extract gold. Water fed into sieve (2) containing ore
£69.98 Framed (other products available)

Distillation of Nitric Acid. Also known as Aqua Fortis or Parting Acid
£69.98 Framed (other products available)

Production of Salpetre (Nitre, Potassium Nitrate)
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Assayer testing samples of gold or silver using a balance, 1574 (engraving)
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Preparation of copper and silver to be alloyed for production of coins
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Smelting of copper: making liquation cakes by reducing copper in furnaces and alloying with lead
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Crystallization of Saltpetre (Nitre, Potassium Nitrate, or KN03, 1574 (engraving)
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Laboratory for refining gold and silver
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Washing ore to extract gold, 16th century (engraving)
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Checking the quality of Saltpetre (Nitre)
£69.98 Framed (other products available)

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