Filtering or Fining?

Advantages of fining over filtering:

  • Fining improves the efficiency of filtering (but some fining agents can cause filtration problems). Fining clarified wines often gives better results, and so fining is often carried out after loose filtering.
  • It requires little equipment
  • It improves wine stability
  • It can have desirable effects (e.g. reduce bitterness)

Advantages of filtration over fining:

  • It is more efficient overall in clarification
  • It can provide sterility
  • It has few side-effects
  • It is quick and easy to carry out.

In practise however, the processes of fining and filtering are complimentary.