How to filter wine<br>Obtain a gravity flow filter. This method of filtering is the cheapest of all the filtration methods. It works by connecting the filter body, containing a filter pad, with a siphon tube.
When filtering wine, the filter needs to be replaced every 4 weeks.
( z1 replace :ARG1 ( z2 thing :ARG0-of ( z3 filter ) ) :time ( z4 filter :ARG1 ( z5 wine ) ) :frequency ( z6 rate-entity :ARG3 ( z7 temporal-quantity :quant 4 :unit ( z8 week ) ) ) )