The Annex 1 commenting team encouraged to take this example out of Annex 1, as a) there may be many opinions of what defines a small batch and b) even a small batch of a high foulant fluid could have a masking effect, which has been the main reason for the encouragement of the PUPSIT implementation. Small or large batch more importantly is to have control over the filtration process to be assured a sterile effluent is achieved throughout the filtration process.