Oak Galls (Size: 100g)
Oak Galls 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 comes as a colourless powder or whole galls and is used to mordant cellulose before adding Alum. This helps the Alum bond with the fibre. Use at 6 to 8% WOF. Myrobalan Extract can also be used as a substitue for Gallnut or Tannic Acid.
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Oak Galls 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 comes as a colourless powder or whole galls and is used to mordant cellulose before adding Alum. This helps the Alum bond with the fibre. Use at 6 to 8% WOF. Myrobalan Extract can also be used as a substitue for Gallnut or Tannic Acid.
