Gallnut (Size: 50g)

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Gallnut is derived from Oak Galls which are produced by Oak trees as a defence against insects which deposit their eggs in small punctures they make on young branches. The tree excretes a tannin rich gum whcih hardens and becomes gallnuts. This is the earliest source for natural tannin and is a colourless powder used to mordant cellulose before adding Alum. This helps the Alum bond with the fibre. Use at 6 to 8% WOF.

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Gallnut is derived from Oak Galls which are produced by Oak trees as a defence against insects which deposit their eggs in small punctures they make on young branches. The tree excretes a tannin rich gum whcih hardens and becomes gallnuts. This is the earliest source for natural tannin and is a colourless powder used to mordant cellulose before adding Alum. This helps the Alum bond with the fibre. Use at 6 to 8% WOF.


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