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Significats de powder nitre en anglès

Encara no tenim significats per a "powder nitre".
Ús de powder nitre en anglès
1
As in orange ochre, powdered nitre may be employed in its preparation.
Field's Chromatography / or Treatise on Colours and Pigments as ...
2
A redder hue is imparted by mixing the ochre with powdered nitre before ignition, the orange red being subsequently washed with hot water.
Field's Chromatography / or Treatise on Colours and Pigments as ...
3
Powdered nitre moistened with water and applied to the face night and morning, is said to remove freckles without injury to the skin.
The Whitehouse Cookbook (1887) / Cooking, Toilet and Household R...
4
The refining flux is made by mixing 3 parts (by measure) of powdered nitre, 2-1\2 of tartar, and 1 of salt.
A Text-book of Assaying: For the Use of Those Connected with Min...