Turbo Carbon is specifically designed for use during fermentation. The unique activate internal pore structure removes impurities not taken out by post distillation filtration. Still Spirits consider it is essential for use with Triple Distilled Turbo yeast if you want their results as promised and will significantly improve all types of Turbo Yeasts. Continue to carbon filter after distillation as usual Always use Turbo Clear after fermentation to remove solids before distillation. If Turbo Clear is not used, the impurities trapped by Turbo Carbon will be released during the boil. Instructions: Before opening, massage the sachet to ensure it is lump free. Add immediately after adding your choice of Turbo Yeast. Stir well to disperse. Ingredients: Water, Activated Carbons, Xantham Gum, Preservative (sulphur dioxide). May also be used in place of Still Spirits Liquid High Activity Carbon Sachet or Hauraki Powdered Hi Activity Carbon in a Continuous Filter Carbon System.