From the extractor, the honey and its impurities are poured into a bucket to be emptied by hand on top of the ripener, a simple decantation vessel. At the outlet of the extractor, a 2 to 3 mm mesh filter retains coarse impurities. The finest impurities can be retained by a 2/10 mm mesh filter, but filtration is then very slow. High-speed rotary filters that introduce air into the honey are not recommended, except for calluna honey, even if they avoid raising the temperature of the product to be filtered.