Perfect Prep Replacement Filters - Closer to Nature Perfect Prep Replacement Filters remove impurities in the water used in your Perfect Prep machine. The Perfect Prep Replacement Filters have a 150 Litre Capacity that remove impurities in your water for up to 3 months. A warning light on your machine will indicate when your filter is coming to the end of its life. This light will then flash when the filter needs immediate replacement.
