All Buon Vino wine filters have been designed to use ORIGINAL Buon Vino Filter Pads. 3 FILTER PADS PER PACK. 3 filter pads are required to operate filter. The micron sizes and consistency of Buon Vino Filter Pads have been designed to give optimal performance when used with Buon Vino wine filters. The flow rate of the pump is designed to work in conjunction with the Buon Vino Filter Pads to give you the best filtration possible. Choose, Coarse, micron rating 6.0, Polishing, micron rating 1.0 or Sterile, micron rating .5. Each pack of Super Jet Filters is estimated to filter 60 litres (15 gallons) of wine depending on beginning clarity. Wine that has had a fining agent added before filtering may use MORE Filter pads.