Potassium Alum 250 gram pack for mordanting wool, cotton, silk & paper - SAVE £0.90p over the 50 gram price of Alum Mordant.
Potassium alum or potash alum is potassium aluminium sulphate dodecahydrate and our potassium alum is 99% pure and heavy metal free.
Potassium Alum Mordant is weighed and sealed in a polythene bag. The bag is then labelled, placed in a padded envelope and posted to you First Class (50 g pack shown in photo but a 250 g pack will be supplied).
